This is caused by overly-aggressive anti-virus software (usually Symantec) interfering with FlashBack.
This can be caused by overly-aggrssive anti-virus software mistakenly blocking FlashBack from writing to its own settings files.
The probable reason is that the file is located in a folder that is being synchronised to cloud storage. Examples of this would be syncing to Google Drive, Dropbox or OneDrive.
Very large FBR files may require too much memory to open on all PCs. This is most commonly caused by recording moving video or video games with GDI record mode.
Occasionally anti-virus software will detect a false-positive result for FlashBack and indicate that it may be malicious or hartmful software.
Contact us and we can send you a zipped copy of the installation file, which should not be blocked by your firewall.
You’ve tried to record a program that uses video hardware acceleration. To get better performance, these applications bypass the usual methods of writing to the screen, and FlashBack cannot capture them.