Hi, there. I am co-simulating Labview and Multisim. I have to simulate a FPGA target using a Desktop Execution Node. I am now facing this error " Error 1055 occurred at Property Node in niFpgaGetTargetClassFromTarget.vi:6910002- >niFpgaDEN_Execute.vi:32001- >Testbench_base.vi Possible Reason(s): LabVIEW:( hex 0x41F) Object reference is invalid". The FPGA target just simulates an easy PI control. The strange thing is that it occurs at a certain point after hours of simulation. I tried almost everything but nothing seems to fix it. I noticed that it occurs always at a certain ratio between last simulated time and DEN sampling time, in example it occurs after 0.1747 secons being the DEN sampling time setted at 8.334e-7, or it occurs at 1.747 with a DEN sampling time setted at 8.334e-6 and so on. It seems that DEN has only a fixed number of iteration before it crushes. Is that possible?? I really hope someone has some suggestions. Thanks in advance.

I've attached a VI that I think fixes the issue. I would create a back up of this VI before overwriting it. The location to copy the VI is <LabVIEW>\vi.lib\rvi\DesktopExecutionNode\Execution. Hope this helps!

LabVIEW

Error 1055

Solved!

Thanks very much Patrick_P, this solved my problem as well!

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LabVIEW

Error 1055

Re: Error 1055