This is a recommended maintenance release which fixes a compatibility issue between the licensing system used by FastPictureViewer and the newly released Windows 7 Release Candidate (6.1.7100).
Updating FastPictureViewer to v1.0.91.0 is recommended for users intending to install and test the 32 or 64-bit versions of Windows 7 RC.
This version also feature improved startup time and reduced memory footprint upon startup.
The new version is available now from the download page.