Cause
The most likely causes are:
- The computer is missing Windows .NET Framework 3.5
- Another program also uses Crystal Reports, and the two programs use different versions
- a4wcrinterop.dll is not registered
Resolution
There are several possible fixes for this message.
- First, ensure all machines have the latest Windows updates
- After you try a fix, try to print the report again
Option 1: Check whether the machine has Windows .NET Framework 3.5 available.
.NET 3.5 is no longer the most recent version. As a result, Windows updates may disable it.
To enable it, open the Control Panel and go to the Features list, as shown below. Re-choose .NET Framework 3.5. Depending on your version of Windows, your features list may look slightly different.
Workstation
Server
Option 2: Check for a conflicting version of Crystal Reports.
Each machine prints and previews using a Crystal Reports print engine or runtime version. If two or more programs use Crystal Reports, they must use the same version.
- Open Control Panel, Programs and Features.
- Look for programs with Crystal in their name.
- Look for other programs likely to print complex documents.
- If you find programs that could also be using Crystal Reports, consult with your IT team about your options:
- Move the other program to a different computer.
- Find the exact version of Crystal that each program is using. Then explore whether you can upgrade the other program to match 300's version.
Option 3: Try to register a4wcrinterop.dll.
- Log in to the server or workstation with Administrator permissions.
- Open the command prompt window.
- Enter the command C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm /register [sage300runtimefolder]\a4wcrinterop.dll.
- [sage300runtimefolder] is the location where you installed Sage 300, local drive or UNC.
- If the path is long, enclose it with double quotes.
If registering does not solve the problem:
- Log in with Administrator permissions.
- Uninstall and reinstall System Manager. See the steps below.
- Apply the latest Sage 300 product updates.
As a last resort, reinstall Sage 300.
How to: Uninstall & reinstall System Manager
Error: "There was a problem registering the assembly a4wcrinterop.dll during installation."
Program hangs after closing the print preview window
Error: "RegAsm: error RA0000: Could not load file or assembly"
What version of Crystal reports print engine is supported for Sage 300?