JBuilderX bad jar file?

[Jason Fox]

After compiling/recompiling several times (4-6 on average) the phone displays
a 'JAVA ERROR' during the install procedure when I load the jad and jar files created by JBuilder. If I use Sun's WTK to compile and the same source files (and create the jar file), it loads fine. For testing, I have tried recompiling unchanged code, and at the 5th load attempt, it failed. I'm using JBuilder X, Mobile Edition with a Motorola i730, using WebJAL r01.01.02 to load the jar/jad files. Any help/ideas with this would be greatly appreciated.

[Fred Grott]

no build errors at all generated?

[Levron]

I had the same error on JBuilderX every time my jar file was bigger then 30Kb. The problem was path to external libraries I was using. Hope this helps

[Michael Yuan]

Levron,

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Thanks! and welcome to the JavaRanch!

[Jason Fox]

Well, the .jar file is around 55kb in size, I am using no external libraries other than the packages in javax.microedition, and the only resource files I am using are graphics (.png files). The application is making extensive use of CommConnection, and is being used as 'driver' to a serially attached device. Unfortunately, I am unable to post code at the present time, but I do not believe it is a coding issue, otherwise wouldn't the WTK also produce an errored .jar file?
For now, I am using JBuilder as an editor, and compiling/jarring with Sun's WTK, as a temporary solution. If anyone has any ideas, I am at a complete loss.