Labview generated DLL - Labview Runtime engine not loading

[bjollies]

I have built a Labview DLL (labview 2014 32b) and have tested it on my development PC by writing a CVI (2013) app around it.  I provided it to a customer and instructed them to install the labview 2014 SP1 runtime engine.  I also gave them my CVI app (they installed the CVI RTE).  When they try to launch the app they get an error that the app "requires a version of 2014 (or compatible) LABVIEW Run-Time Engine."  The lvrt.dll is copied to the directory with the app as I had seen suggested in other forums.

The error described above seems to be generated from the LVRTE dll.  It is reported with a "System error 317 while loading LabView Run-Time Engine" 

I have duplicated this issue on a clean PC of my own, installing the CVI RTE and the LABVIEW RTE.  

Does anyone know why the RTE will not load?  Is this a common problem? 

[bjollies]

I've attached the error

[Kyle97330]

How old was the forum post you read that said that copying the LVRT DLL would be good enough to include the run time engine?

I ask because while I can't seem to find the link right now, I remember reading that at one point that did work but it later stopped working sometime around when LabVIEW switched from version numbers to yearly editions (i.e. 2009ish).  I think the LVRTE requires support files you only get by doing a full install on the PC, not just a DLL copy.

[altenbach]

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@bjollies wrote:

I provided it to a customer and instructed them to install the labview 2014 SP1 runtime engine.

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You need to be more specific with that statement

.

1. There is the 32bit version
2. There is the 64bit version
3. There is the 32bit browser plugin version
4. There is the 64bit browser plugin version

Only #1 is correct in this case.

[bjollies]

I cannot be sure of what the customer installed.  However, when I setup a new PC (to be sure that I wasn't using the full development engine on my development pc).  I installed the 32b version, as in your option 1.  I Also installed the CVI 2013 runtime, since my app was developed in CVI2013.

I only copied the lvrt.dll from the "C:\Program Files (x86)\National Instruments\Shared\LabVIEW Run-Time\2014 directory", once the above mentioned install was done and I verified that it would still not run.  That didn't work either. 

[bjollies]

Does anyone have any suggestions?

[dkfire]

So did you develop the DLL in LabVIEW 2014 with SP1 or without? 

[altenbach · Accepted solution]

What happens if you don't copy the lvrt.dll?

[bjollies · Accepted solution]

I was able to solve this.  I needed to uninstall the version:

http://www.ni.com/download/labview-run-time-engine-2014-sp1/5198/en/

 and install version

http://www.ni.com/download/labview-run-time-engine-2014/4887/en/

I also had to remove ANY lvrt.dlls from the project folder where the executable ran.  There is an old forum that suggests this.

What is confusing is that if I run NI MAX in the station I built the DLL it states that it has LV 2014 SP1 f1.