Close Dreamweaver and delete your winfilecache.dat file.
1) Locate the Dreamweaver user configuration folder:
Mac OS: [user name]/Library/Application Support/Adobe/Dreamweaver [version]/[language]/Configuration
Windows 7 or Windows Vista: C:/Users/[user name]/AppData/Roaming/Adobe/Dreamweaver [version]/[language]/Configuration
Windows XP: C:/Documents and Settings/[user name]/Application Data/Adobe/Dreamweaver [version]/[language]/Configuration
2) Delete these files:
Windows: WinFileCache-xxxxxxxx.dat
Mac OS: MacFileCache-xxxxxxx.dat
The string of characters after "FileCache-" can differ depending on your system.
note: Make sure dreamweaver is closed before deleting the cache files. I'd also go to WebAssist->Preferences and choose wizard settings and change the delay setting to "Long Delay"
3) Test and see if the problem is fixed. If you still have issues, then try reinstalling eCart.
4) If that still doesn't fix it then I'll need to set up a screen sharing session with you to debug it further. Just reply here with your phone number in the private area and I'll give you a call.