Hi guys,
Some of us have had similar experiences with the Updater, and understand your frustration. .754 was supposed to have repaired a problem for those of use that use UAC in Windoze. Let's see if that repairs the issue (when the .755+ version rolls around).
Please follow-up when that day arrives. Be specific as to what failed for you: "compile problems when running quest bot", "exceptions being thrown by the updater", etc.
We've written several bug reports against the Updater in the past. Things improved, but not even close to where it should be for many of us.
If no joy, I've already got a draft bug report begging for something to be done. Having the Updater do a full 'clean install' is almost a nuclear option, but its to the point there may be nothing left to do but that.
cheers,
chinajade