Hi,
Okay thanks for the information, I've just tried it here and it seems to work okay for me..
Can I ask you just to try the following;
-Run the uninstaller from C:\Program Files\Corona
-Restart your computer
-Install the new version of v4.
If this doesn't help, I will ask you to generate a minidump that we can analyse. Instructions on how to do this are in my signiture. (Step number 2).
Thanks,
Rowan