Notes about the RRGT file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The RRGT file type is primarily associated with 'REALrunner Lite' by Gryphonclaw Software. This is a Mac OS X file package similar to RTF with attachments (RTFD).