This is due to the Midlet Permissions set in the JAD. JBlend doesn't like those permissions; the way u can solve this is:
ask the application vendor to provide you with an unsigned application, which doesn't contain those Midlet Permissions.
Or download the JAR of that application on your computer, unzip that JAR file, modify the MANIFEST and remove the MIDLet permission entry. Save the MANIFEST and then re zip the JAR file and then transfer it to your mobile via bluetooth.
I get an error when trying to install mobile chess.
I have the latest Windows Mobile 6.5
It wants to install on JBlend.
The error message:
Installation failed, errno=910
Application authorization failure