Hi

Our application development is based on 2019 r3. I ran into a crash/exception running the application. The crash occurs in the C external function defined as :

function long ShellExecuteA( ulong hWnd, string Operation, string lpFile, string lpParameters, string lpDirectory, int nShowCmd ) LIBRARY "shell32.dll" alias for "ShellExecuteA;Ansi"

Error number: 21

Bad runtime reference at line ..

The crash/exception seems be related to the build 

- I one case the program feiled after a complete rebuild

- after a second fulll rebuild the program worked ok again

The description found in the appeon community is like this

I have not detected how to control this issue - a single full build does not help to avoid this problem.

Is there any experience / advice how to avoid this issue?

The function is defined in the main program as an external function - is there an alternate implementation ?

For example - is it more robust to create a .net assembly and execute the functions from an imported dll in pb 2019?

Regards

Gunnar Gisleberg

Locus Solutions AS