Worked around this by treating zero and space as equivalent in that character position. Removed old version commmit as new one seems fine. Explorer window is now automatically refreshed for all appropriate commands. Let me know if there are cases where it does refresh when it is annoying and doesn't need to, or if there are cases where id doesn't refresh and it should. Bug with diff if you login during the diff.
Registry handle leak fixed.
Finally got icon for TortoiseAct.exe working. Version 0.40 had an old version of the executable, accidentally. Import command now works. This is documented in help.html. Tidied up web log code into a separate class.