DAbort in fpsane.cpp with new version of .net dll

Hi everyone,

my project uses a class and lots of VIs with a self-made .net dll.

Now I made a new version of that dll with only minor changes. When I create a new VI from scratch I can use that dll just fine.

Now, when I overwrite the old with the new dll and try to open my project, I get a fatal error during loading.

DAbort 0x1A7102DF in fpsane.cpp

Possible Cause: Path\ScriptEngine.lvclass\ScriptEngine.ctl

In the control for the class I use .net refnums of that dll.

How can I get LabView to use the new version of the dll with the project? None of the functions of the old dll are missing in the new one, there are just additional functions in the new one. Even if I reverse the changes in the dll and build the dll again, this will not work.

Thx in advance