There are a few known causes for Expression Web crashes. If you start Expression Web and you see a message telling you that it’s encountered a problem and needs to close, it’s possible that one of the issues below may be causing the problem.

Kaspersky Antivirus

Earlier versions of Kaspersky antivirus interacted with jscript.dll in such a way that caused a crash when starting Expression Web 4. To resolve this problem, make sure that you have the latest version of Kaspersky Antivirus installed from the Kaspersky site.

Add-in Failures

If an Expression Web add-in crashes, it can cause a crash in Expression Web. In such cases, Expression Web will launch on safe mode after the crash. If the safe mode launch succeeds, it’s likely that the crash was caused by an add-in installed in Expression Web. To resolve such issues, uninstall the add-in and contact the add-in vendor for an update.

“Common” Folder

If there is a folder named “Common” at one level above the installation folder for Expression Studio (e.g. c:\Program Files\Common), it will cause a crash in Expression Web on launch. To resolve this issue, remove or rename the “Common” folder.

Incorrectly Registered jscript.dll

Expression Web 4 includes a new add-in architecture that allows for the creation of JavaScript add-ins. If JavaScript isn’t correctly registered on your system, Expression Web 4 may crash on startup when it attempts to enumerate the add-ins that are installed.

To correct this problem, ensure that jscript.dll is correctly registered by running regsvr32 using one of the following command lines.

For 32-bit Operating Systems:

regsvr32 c:\windows\system32\jscript.dll

For 64-bit Operating Systems:

regsvr32 c:\windows\syswow64\jscript.dll