During install of REXX-ooRexx_4.2.0(MT)_32-bit 6.04 19 Jan 2014 the uninstall of previous version finished normally. The following Install started automatically; I entered all the details, editor file path, etc., but then the installation failed: "Unable to open rexx.dll for write". There was no Rexx or rxapi process in the task manager list. I had to abort the install (which lost the changes I had made) and reboot before I could install ooRexx [and of course my reboot process uses Rexx a lot, so it was a mess...].
OpSys = Windows 7, fully upto-date.