Everything was working great for months, however Cubase 5 would crash once in a while and it was becoming more often.
Then yesterday, continually reason 5 crashes when rewire connection attempted with Cubase 5 on Windows 7 Ultimate.
I was trying all of the ideas I found on the internet all day yesterday and nothing worked.
I did a rewire update and it was older. Then I was getting this message.
"rewire installation failed because access to a file or directory was denied while installing the rex dll in the system directory"
Then I finally found your detailed discovery here and I'm happy to report that simply copying
solved my problem! Thanks! I hope this can help others too.
Next I was going to try the 32-bit install, however I hope that isn't needed now!