Error message when trying to get NAV speaking with a COM port.

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Posted on by Daniel Edholm

Hello, I am trying to solve a problem with a customisation for NAV called vetvision. A veterinary software.

We are trying to connect an electronic tax-box to using a COM port as described, we get an error message called:

"could not create an instance of the ole control or automation server identified by GUID={F55F0681-B42EA-A60E-6119F4171880}1.0:{F002E930-3289-4A5C-AA76-63F5DDD38229}:Unknown Automation Server.Unknow Class

Any ideas hat that might be caused by?

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Rashed 3,765 on at

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Re: Error message when trying to get NAV speaking with a COM port.

You need to register the (COM) dll file using Regsvr32 command.
Daniel Edholm 25 on at

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Re: Error message when trying to get NAV speaking with a COM port.

Solved the problem, was a error in the registry.