Error: Exception has been thrown by the target of an invocation

[SaranVenkateshS]

Hi All,

While i am facing following issue :

32 bit vision dll in labview (2015) 32bit in Window7 64 bit (OS Laptop) - No Error

32 bit vision dll in labview (2015) 32bit in Window7 64 bit (OS PC) - Exception has been thrown by the target of an invocation

Regards,

Saran

[Bob_Schor]

I don't understand the problem.  Here's what I think you are saying, but I must be missing something:

• You have a Desktop PC and a Laptop PC, both with the same version of Windows 7 installed (Windows 7, 64-bit).  I'm assuming both are running the same "level" of Windows, e.g. Windows 7 Pro (or Enterprise, or Home).
• You have LabVIEW 2015 (32-bit) and the requisite Toolboxes and Drivers installed on both PCs.
• You are trying to run the same LabVIEW code on both PCs.  Note it is not clear if you are running code from within the LabVIEW Development System or are trying to run a built Application (.exe).

Under the above assumptions, you should have a similar response on both machines (unless, of course, the Laptop is running with 1GB of memory, or something silly like that).  Since your response is different, one or more of my assumptions is wrong.  Please clarify and provide more information (like a more detailed Error Message), maybe even some code for us to test ...

Bob Schor

[SaranVenkateshS]

Hi Bob,

thanks for quick response,

1.

I have created 32bit c# .net dll using visual studio, then I am using it in 32 bit labview 2015 in my Laptop no execrations errors,

working fine !!

2. But if I use the same dll in desktop PC with same labview 2015 32 bit .the .net interface in labview shows "Exception has been thrown by target invocation "

(Note : it is working fine with 64bit labview)

ACTUALLY I AM GETTING SAME RESPONSE WHILE I AM USING SAME DLL IN VISUAL STUDIO .

Thats why I am looking is there any setting in PC i need to set /configure ?

Thanks

saran

[SaranVenkateshS]

+  Note : if I create 64bit dll in visual studio and use it in labview 64bit means No error in that Desktop PC !!

[Bob_Schor · Accepted solution]

Do you have both 32-bit and 64-bit LabVIEW installed on your Desktop machine?  

I've not tried building DLLs in Visual Studio, so am not 100% certain whether 32-bit LabVIEW "expects" 32-bit or 64-bit external DLLs when running on a 64-bit system.  You might try the slightly-illogical pairing of your LabVIEW code, developed with 32-bit LabVIEW, and the DLL developed with 64-bit VS.

Are both the Laptop and Desktop running the same OS?  What OS?  And what "flavor" (e.g. Windows 7 Pro x64, SP1, or Windows 10 Home, Anniversary)?

Bob Schor

[SaranVenkateshS · Accepted solution]

Hi Bob,

My industrial desktop PC has the problem. it is not allowing me to use 32bit Vision DLL and LabVIEW in that 64bit Windows 7 PC.

So I have decided to use 64bit DLL and Labview and its working fine.

Note: I tried to follow the following method still having issue 

http://help.cognex.com/Content/KB_Topics/VisionPro/Programming/3948.htm

Thank you so much,

Saran.