Currently, debug symbols are not available for all in market BlackBerry 10 OS releases. If you attempt to debug your application using a version we have not published debug symbols for you will receive the error of "Cannot find matching debug symbols". This will prevent BlackBerry Momentics from starting its debugger.
You can work around this issue by enabling debugging with mismatched debug symbols. Use the following steps to enable this feature, which is disabled by default.
Start BlackBerry Momentics.
Click on the Window menu.
Click on Preferences.
Check "Allow debugging and profiling with mismatched symbols".