Even if you did not click the LOSSLESS button, that export mode may still have been used via "Auto Detect" in the export dialog. Lossless is broken in 11.08.
Be glad to take a look at the file, but you need to follow the above instructions step-by-step and submit the PROJECT. The VPJ file alone is of no value.
Test the version linked above and see how LOSSLESS does for you. Or re-encode instead...
In the export box click the blue Default Quality / Filesize link and in the Lossless Export field switch from Auto Detect to OFF (re-encode).
For licensed users upgrades are free for up to six months from purchase date. After that, VP will continue to fully function but a fee will be required in order to register the newest. Retain your old install file and registration info.