Hi,
I have a working version actually on my server, i don't have any /update/ folder or info.php file in any folder. Maybe there is an option that you use during the install that cause this error message ?
As you can notice in the original thread i also encouter problems installing TWC but it was a long time ago and completly forgot how, since i backup the DB and TWC folder on server change. ( i also said that i will put a complete noob guid but never did it
)
regards.