Changes to UE don't work

Hi,

I edited the email body with Dreamweaver. When I saved the file I got this error message:
"While executing onLoad in WAUE_afterSave.htm, a JavaScript error occurred."

I had the same problem with UE3, but at least the changes would stick after saving twice. I had hoped the problem would go away with the new version. Once I confirm the error message a file is generated next to the success page "checkout_success_germany_WAUE_HTML_WA_Universal_Email_germany.php"

Because I had to use the new version of UE, there was also a new folder "webassist" generated. When I open the files, they contain my changes. But when I test the page, the email has not change.

I noticed one of the lines, that said:
include("WA_Universal_Email/WAUE_checkout_success_germany.php");

Would that be part of the problem?