When you receive a link for downloading a product you can check the correctness of file to be sure that file downloaded correctly.
If you are running on Windows Vista or higher, then check that after you activate the installer you receive User Account Control notice:
If you have "Verified publisher: Parallel Graphics LTD" it means that your installer has been downloaded correctly. If your notice looks like this:
Then you need to download installer one more time.
If you are running on Windows XP we recomend you to download the WinMD5 free tool and select your installer to compute MD5 checksum. Correct installer has the following checksum value:
if value is different it means that you installer is corrupt. You need to download the installer once more.
Here are checksums for some of our products:
Cortona2D Editor Pro 1.0.4