Problems installing an application in windows with Qt Installer Framework

[Bonride]

Hello, I have problems installing my qt application with "Qt Installer Framework" in windows 7. Specifically with the installation folder "C: \ Program Files". The installer fails in the process of copying the files to that folder. Sometimes it takes a long time to install, it is an application of 40 Mb with not too many files. Normally takes only a few seconds.
I have read that there is a permissions problem in this folder. I have UAC enabled on Windows. My user has administrator permissions. If I try to install directly on C: so good and fast.
I've also read something about the manifest file and the file "version", I tried to include it but it does nothing.

Error text:
"Error during installation process (com.enterprisename.applicationname):
Error while extracting 'installer://com.enterprisename.applicationname/0.9.0dojo.7z':
Could not open file: (No file name specified)"

If anyone knows how you can fix this I would appreciate a response.
Regards