Charlie the test pilot says:

"Don't bite off more than you can chew - these test binaries are for tiger tortoises only. Make sure you have a more stable version about in case they don't work."

Only install this version if the TortoiseCVS team have asked you to do so.

To save the debug logs generated by this version, open the Preferences dialog and select the
Debug tab. Then, select Enable debug logs for either Main program or Shell extension
(only select the latter option if the problem is related to the context menus, the overlay icons,
or the Explorer columns). Finally, under Debug logs choose Save debug logs or Save
debug logs, no file caching - the latter is useful if TortoiseCVS crashes, but also makes
TortoiseCVS very slow.

The DebugView utility is useful for viewing the debug output in real-time.