a sharing violation occurred while accessing an unnamed file

When I install the "Replay Capture Suite" I get the error "a sharing violation occurred while accessing an unnamed file" (irsetup) when installing the apps "Video Capture", AV" and "Converter". I also tried to downoad and installe them seperately, but get the same error every time (als after rebooting my machine). The other apps ("Media Catcher", "Music", "Media Splitter" and "Padlock" have been installed without any problems. My Operating System is Windows 7 Ultimate 64bit. Thank you for your help!