DLL access Error Code

[PhilippeG]

I am trying to access a dll (the eztwain dll from DOSADI) from labview.
I have all the functions parameters in the documentation.
I am new at that stuff (dll access), so even though it feel like I am putting all the required parameters, often I got labview to close itself after I (successfully) access a function or it generate the following attached error message.
Any insight at the reason why it is doing that ?

Has anyone by chance ever used that Dll (http://www.dosadi.com/products.htm) to access twain devices (such as scanner)? or does anyone know of an easy way to access twain devices from labview.

Thanks in advance

P.Guerit

[Labviewguru]

Can you please post the code and maybe someone can be of assistance.

This looks to be an internal error in the DLL, but may be because of a mismatch of data types being sent into the DLL.

If you can't post the code, at least post a screenshot. Also let us know what version of LabVIEW, what operating system, etc.

Thank you

[PhilippeG]

Ok, here are the details.

I am running win2k workstation, and I am using labview 6.1. The Dll (as well as documentation) can be freely downloaded from (http://www.dosadi.com/products.htm); I am trying to access the Pro version. Here is the direct link to the zip file: http://www.dosadi.com/pub/eztw2.zip

Note: the authors include some VB and C++ program examples that sucessfully access the DLL. So it has to be something I am doing wrong.

Here is the code (or one of the variations I tried).

Note: I tried the code on another PC (same OS, same version of labview), and I get the same identical erro but for the error code (0x150 this time instead of 0x13C).

Thanks labviewguru for your answer.