Why "Lost ActiveX connection with LabVIEW server"

[OnlyOne]

Hello,
i´m running a custom LV-OperatorInterface in LV8.21 which executes a TestStand-Sequence.
When starting the LV-OperatorInterface then TestStand 3.5 is also started with the Model-Sequence and two ParallelSequences which execute "in a new execution".

Inside TestStand i´m running LV-Teststeps. The Teststaps get their parameter-information via ActiveX over the Sequence-Context.
Now i see that sometimes that there seem to be a problem with ActiveX in the ParallelSequences and i have errors like this:

-> Error Code:    -18001
  -> Source:        Error executing substep 'Run'.
Lost ActiveX connection with LabVIEW server. The LabVIEW Adapter will try to reconnect on the next execution attempt.

I only have the error in the two ParallelSequences, never in the normal TestSequence.

When and why does this error happen?

Thx for your help.

[DanielHermyt]

Hello OnlyOne,

please have a look at

http://forums.ni.com/ni/board/message?board.id=330&message.id=14665&requireLogin=False

and

-18001 Errors When Using TestStand and LabVIEW
http://digital.ni.com/public.nsf/allkb/55574CB4E0F326DF862567FD0077E303?OpenDocument

Probably there are problems with the settings on your system.

If this doesn't help: Are there other error messages that occur? When does the error occur?

Any more informations about your system and your procedures are helpful.