Thank you for your post of this issue.
We have gone back and ran several different scenario tests involving activation and have not come across this error.
Were you updating from a prior beta build of Theme-It? And if so, did you remove the existing build prior to installation? If the answer is 'yes' to both, please delete Dreamweaver's cache file and attempt to activate Theme-It again:
For Windows users
1.
Close Dreamweaver.
2.
Open a Windows Explorer window.
3.
In the Address bar enter %appdata% and click Enter.
4.
Open the Adobe directory.
5.
Open the Dreamweaver folder for the version of Dreamweaver you are using.
6.
Dreamweaver CS4 users only – open the en_US directory.
7.
Open the Configuration directory.
8.
Locate the WinFileCache.dat file. There may be some other numbers appended to this filename.
9.
Press Delete to delete this file.
10.
Open Dreamweaver.
Note: If the problem persists, you may need to uninstall your extensions, reinstall them, then delete the WinFileCache.dat file and open Dreamweaver.
For Mac OS X users
1.
Close Dreamweaver.
2.
Open your OS X Finder.
3.
Navigate to the following directory.
Dreamweaver CS4 /users/[username]/Library/Application Support/Adobe/Dreamweaver CS4/en_US/Configuration/
Dreamweaver CS3 /users/[username]/Library/Application Support/Adobe/Dreamweaver 9/Configuration/
4.
Locate the MacFileCache.dat file. There may be some other numbers appended to this filename.
5.
Press Delete to delete this file.
6.
Open Dreamweaver.
Note: If the problem persists, you may need to uninstall your extensions, reinstall them, then delete the MacFileCache.dat file and open Dreamweaver.
Common
If you are still encountering the issue, please reply with your operating system version as well as a list of other WebAssist extensions you have installed so that we can look into this issue further.
Thank you.