I sent my first java application to QA.

This is the result:

Dear Publisher,
Thank you for Submitting ItemName. Unfortunately the content item and or file Did not pass the Ovi quality assurance (QA) review process.

Comments from the QA team:
QA Failed. ISSUE: SUMMARY: Application crashes when to Starting installation.
ACTUAL RESULT: When Starting Following the installation the error message is Displayed "Installation Failed: Unable to install application. Installation Corrupted Files. Processing attribute" MIDlet-Jar-Size 'failed. "
EXPECTED RESULT: The application is Properly installed and no error message is displayed.
AFFECTED DEVICES: Nokia N97 (10.0.012) Nokia 5800 XM (52.0.007) Nokia N8-00 (013,009) (public, Qa in progress -> Qa failed)

The file failed QA Following on the target (s):

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Why is this happening?

When I tested the application on the mobile, installed correctly.

I think in the QA changed the size of the jar and this causes the problem.

How do I know what will be the final size of the jar for setting the attribute MIDlet-Jar-Size correctly?

Thanks in advance for assisting with the publication of my first application.