1. Which ports do JavaHMO use?
Port 2190 is the standard port used for the TiVo beacon protocol. This protocol is used by the PC server to tell the TiVo box that it is out there. It is also used by the TiVo box to tell any PC listening that it supports HMO. A second port is used to transfer the media files from the server to the TiVo box. The TiVo publisher software uses the HTTP protocol on port 8081. JavaHMO will default to the same port, but a different port can be configured in the configure.xml file.

2. Why does the wrapper.log has the following entries: Unable to execute Java command. The system cannot find the file specified. (0x2) / Unrecognized VM option '+UseAdaptiveSizePolicy'
It probably means that your JRE is not installed correctly. To test that it is correct, open a command prompt and type the following command:

java -version

3. The logs contain these kinds of errors: de.vdheide.mp3.ID3Exception, de.vdheide.mp3.FrameDamagedExceptions
This means that an mp3 file is corrupted in some way.

4. The logs contain these kinds of errors: java.io.IOException: Too many open files
You have exceeded the capacity of the server. Try organizing the files into subdirectories.

5. TiVo shows an error message when I try to listen to streaming radio stations. The streaming audio doesn't work.
There are two kinds of error messages that TiVo will show:
a) A problem occurred while accessing the server.
This problably means that the format of the url is not supported. TiVo appears to have problems handling URLs that have information after the port number such as: http://64.236.34.141:80/stream/1040.
b) An unexpected error occurred while accessing the server. (ERROR#1-43-302)
The last three digits appear to be the HTTP status code returned by the remote server. TiVo could also not connect to the server due to congestion on the remote server. TiVo does not appear to be intelligent enough to at least attempt a few times to connect before showing the error. Just try again until you get through.

7. When I try to listen to a station on www.shoutcast.com, I get the following message: Too many requests. Try again tomorrow.
Shoutcast sends this response when someone at your location has attempted to tune into more than 600 stations in a 24 hour period. Unfortunately, Shoutcast defines your location to be anybody from your class C network! To reduce the chances of this happening, the JavaHMO Shoutcast module is configured to only request a maximum of 20 stations per reload period which is defaulted to once a day. You can read this discussion about the issue.

8. The Shoutcast listings never show the stations I am interested in:
The Shoutcast module will only download the top 20 stations in each genre you have selected as listed on www.shoutcast.com As an alternative you can create .m3u or .pls playlist files with the URLs of your favorite online stations. These playlists can then be added to JavaHMO using the configuration GUI.

9. The internet image dates arent accurate. The internet images arent using the reload value I have specified:
All of the internet content are placed in a queue and are scheduled based on the global server reload value or the reload value for each item in the configuration file. JavaHMO will attempt to download the internet content as close to the reload period as possible. However, the download times can be affected by many factors including:
a) the speed/quality of your local network,
b) the speed/quality of your internet connection,
c) how busy JavaHMO is,
d) how busy the PC server is that JahaHMO is running on,
e) the accuracy of the date on your PC,
f) caching on Tivo,
g) the regularity at which the remote web site publishes the images.
If you stay within the folder that contains the internet content, then TiVo will cache the date information. To force TiVo to get the latest data about the images, go to the main menu and then back to the folder with the internet content.

10. Sometimes there are no cinema theatre times:
The theatre times are obtained from www.movies.com. It does happen that some theatres do not have information because their systems might be down. It is also more likely that there will be no listings the further ahead in the week you go.

11. My favourite theatre does not appear on the cinema listings:
Go to www.movies.com and try different zip codes until you get the theatre listing you are interested in. Use that zip code in the configuration file for the cinema element.

12. I get the following error in the logs: java.lang.NoClassDefFoundError: javax/media/jai/PlanarImage
The Java Advanced Imaging package is not installed correctly. For a Windows installation, check that you have the following files in the C:\Program Files\Java\j2re1.4.2_05\lib\ext directory:
jai_codec.jar
jai_core.jar
mlibwrapper_jai.jar
If not, reinstall the JAI package.

13. The JRE installation program hangs and does not complete the installation:
Do you have enough resources (CPU/memory) during the installation?
Are you experiencing any other problems on your system?
Are there any error message in your control panel/adminstrative tools/event viewer logs?
Do you have a C:\Program Files\Java\j2re1.4.2_05 directory? If so, delete and try again.
Is you hard drive full? You need at least 50MB for the JRE.
Is your hard drive badly defragmented? Run a defragmentation utility.
Is your file system corrupt? Try chkdsk /f at the command line and reboot.
Do you have other versions of the JRE installed? You might have to uninstall those and reboot.
Do you have any Java processes running in Task Manager? If so kill those for the installation.
Search the Sun forums for a solution.

14. The cinema listings skip days:
Listings are only shown for days which www.movies.com has data.

15. XP service pack 2:
As expected, the internal firewall blocked javahmo from working. There was no notification of any sort, despite the box being checked that asked for notification. I turned on logging (Windows Security Center -> Windows Firewall -> Advanced) and found it was dropping the incoming broadcast packets on port 2190 from my 3 TiVo's. I created an exception for UDP port 2190. Then the firewall was blocking the incoming TCP packets from the TiVo's when a Javahmo service was requested. I created an exception for TCP port 8081. Everything seems to be working fine now. Note that at no point was I ever notified of anything, and at no point was anything being blocked going out from javahmo or my machine in general. To recap, I added 2 ports to the exception list (Windows Security Center -> Windows Firewall -> Exceptions -> Add Port): Port number 2190 with UDP Protocol Port number 8081 with TCP Protocol

21. I edited the configuration file but JavaHMO didnt pick up the changes:
If you edit the configure.xml file directly you have to restart JavaHMO manually. If you use the GUI to make configuration changes, all the changes are saved to the configuration file and take immediate effect without requiring a restart.

22. In version 1.0 I had to set the DISPLAY variable for the Linux installation. Is that still neccessary:
JavaHMO no longer requires the DISPLAY variable to be set and in fact can run on a Linux server without X11.

23. I cant get the Windows installation wizard to run:
I suggest you try and install JavaHMO without the installation wizard. Download the following archive:
javaHMO-2.0.zip
Extract the files into:
C:\Program Files\JavaHMO
Install the JRE and JAI packages.
Add the JRE bin directory to the SYSTEM PATH environment variable.
Run the following script to install JavaHMO as a service under NT/XP:

• C:\Program Files\JavaHMO\bin\install.bat
• Start the JavaHMO service using Control Panel, Administrative Tools, Services, "JavaHMO TiVo TCM", right-click, Start.

24. Why do the thumnails show up so slowly:
It depends on what kind of photos you are viewing. If they were imported from a digital stills camera then JavaHMO will use the thumbnail generated by the camera. If JavaHMO cannot find the thumbnail, then it has to generate the thumbnail by scaling the entire image in real time which is much slower. Once the thumbnail is created, it is cached and subsequent views are significantly faster. You can enable the "Generate Thumbnails" option in the server module of the configuration GUI to force JavaHMO to thumbnail all your files before they are viewed.

25. I am getting a lot of "out of memory" errors in the logs:
You can play with the memory allocation by editing the following text file:
C:\Program Files\JavaHMO\conf\wrapper.conf
There are two settings you can change:
# Initial Java Heap Size (in MB)
wrapper.java.initmemory=32

# Maximum Java Heap Size (in MB)
wrapper.java.maxmemory=64

I suggest you increase the initmemory to 64 and the maxmemory to 128. Restart the JavaHMO service after you made the changes.

27. Can JavaHMO run on Debian:
Integrate Sun's JDK with Debian according to these instructions.
Then install javaHMO using "alien -i javaHMO-2.0-3.i386.rpm"

28. Can the names of the content modules be changed:
The names of the menu items can be configured manually in the configure.xml file. Each module has its own name. You have to restart JavaHMO to pick up the changes.

29. The JRE or JAI installation programs are hanging:
This is usually caused by another instance of the Java JRE running. Those will appear as either "Java" or "Javaw" in the list of processes. It is recommended to kill those processes if you experience installation problems.

30. My TiVo and JavaHMO are on different networks and cannot see each other:
JavaHMO supports manual connections from TiVo. Select the "Manually add a server..." option on TiVo and enter the IP Address of the machine running JavaHMO.

31. I have multiple installations of JavaHMO and now I see multiple duplicate menu items on TiVo:
Version 1.1 had some bugs which did not handle multiple JavaHMO installations correctly. Version 1.2 and later correctly handles this situation.

32. How do I determine the current version of JavaHMO:
The version is displayed in the configuration GUI. The configuration file also has the current version:
Look for the following tag for the version value:
<configuration version="2.0">

33. I have VPN software installed and JavaHMO does not work:
JavaHMO will not work with Symantec's Enterprise VPN client installed (formerly known as Raptor Mobile). Even if you do not launch the client, no traffic is sent out on the network (or is blocked) and therefore JavaHMO does not turn up on TiVo. Removing the client fixes the problem. Provided by Charles Waddington

34. After running the installation wizard, TiVo does not show the JavaHMO menu options:
It all depends on how your network is configured to allow the broadcast beacons from JavaHMO to get to your TiVo.

35. On computer restart JavaHMO does not automatically start:
Make sure that the tivo beacon service is not running. The javaHMO install kills this process for you, but your machine may still have it set to autostart.
You can disable the service in the services control panel, or uninstall TiVo Desktop.

36. The installation wizard complains: The Java HMO Service could not be installed:
The installation wizard was not designed for Windows 98 and Windows ME, so you will have to make a few manual changes. Firstly, after you have run the installation program, you need to rename the following file:
C:\Program Files\JavaHMO\bin\run.cmd
to
C:\Program Files\JavaHMO\bin\run.bat
You also might have to make the DOS environment size larger. If you create a desktop shortcut for run.bat, you should be able to change it there. The easiest thing to do is bring up the properties of your DOS window by clicking on the right mouse in the title bar. Then goto the Memory Tab. Increase the Initial Environment to something like 2048 or 4096 or something. Quit the DOS window and re-start it. Trying rebooting if it still doesn't work. If after rebooting it still doesn't work modify your config.sys's SHELL= line to: SHELL=C:\COMMAND.COM /P /E:XXXX where XXXX is 1024, 2048 or 4096 and reboot your computer. The objective here is to increase your environment just enough to allow Java to run without wasting memory so you want to pick the lowest number that will allow you to run. If you have already installed the TiVo Desktop software, you need to disable the TiVo Beacon service. You will need to use "msconfig" to disable TiVoBeacon from starting and then restart windows (do a shutdown, select restart and hold down shift and click OK).

37. Can I let somebody connect to my JavaHMO server over the internet:
Yes, you can. Open the following firewall ports: 8081, 2190 and use the manual connection feature on the TiVo. If you share JavaHMO over the public internet, it is highly recommended that you enable authentication as discussed in the documentation and take basic precautions such as running firewall and virus software.

38. The configuration data has all kinds of weird characters which I cannot read:
The values in the XML file is URL encoded to allow for special characters to be used which clash with the XML standard. There are many online resources which you can use to URL decode the values.

39. Why is the Windows installer program so large? (23MB):
The Windows installer also includes the Sun JRE (14.8MB) and the JAI (5.4MB).

40. The organizer is not picking up my new MP3 files:
The organizer caches the MP3 tag data and does not automatically know about any new files that have been added. You can force the organizer to re-read the MP3 tag data by unselecting the "Use Cached Tag Data" option in the configuration GUI.

41. None of the streaming stations are working:
JavaHMO includes a streaming proxy which will redirect all requests for online streaming stations to be proxied by JavaHMO. However, JavaHMO needs to have the correct IP address of the PC for this to work correctly. Look in the log file for this entry:

2004-02-14 12:46:22,436  INFO [main] Server - Local IP=192.168.0.2

42. Why don't the web pages look as good as on my monitor:
There are several factors that make it very difficult to display web pages on TiVo at the same image quality level that you get on a computer monitor:

43. Developing your own plugins:
The JavaHMO source code includes a file called "Developers.txt" which explains how to create your own plugins.

44. Count not update JavaHMO server:
If you press the Apply button in the configuration GUI, you get the message: "Count not update JavaHMO server" This means that the GUI could not communicate with the JavaHMO server. Check that the JavaHMO service is running.

45. How do I specify a username/password for the NNTP plugin:
Currently, the library that JavaHMO uses to download NNTP content does not support username/passwords yet.

46. How do I port JavaHMO to another platform:
The JavaHMO source code includes distribution configuation files for Linux and OS X that was used for JavaHMO 1.2 The JavaHMO forums also have discussions by users who have attempted porting the code to various platforms.