Similar error
To view and edit your support ticket, please log into your support history:
supporthistory.php
If anyone else is experiencing this same issue, please append to this thread.
Okay, we’re using CS3 (DW9), and we get “While executing timer in WAUE_Main.htm, a JavaScript error occurred.” No other text in the alert box (other than the title, which is simply the name of the application itself). No indication of which file nor what line generated the actual error.
Once dismissed, this alert often pops up a second time, then, when it’s dismissed that second time (or sometimes the first time), the user interface box appears but as nothing but a totally gray empty UI window! Not a single UI widget of any kind in it, not even an [Ok] nor [Cancel] button! There is the standard Windows close icon in the upper right corner, which fortunately does dismiss the dialog, otherwise we’d have to force-quit DW itself every time this happened.
Similar errors happen with many of the WebAssist extensions we purchased as the Super Suite (latest version). It's pretty much unusable.
I deleted the winfilecache.dat file and made the change you gave in Post #2 in this thread.