On double-clicking "start.exe" on USB drive root, grey portableapps frame appears but program stops there. Popup specifies module not found. ClassID:{56FDF344-FD6D-11D0-958A-006097-C9A090}. This has only appeared since upgrading to 12.05. Have tried to uninstall and reinstall but have the same problem. PC is Windows 7 Pro. Has not been upgraded since August 2014. Thanks