Error Code: -18004, An error occurred accessing the LabVIEW Run-Time Engine DLL. Source: 'TSAPI'

[Dave_RS]

The following fault has developed on a test rig following the loss of the network. The network recovered, but this fault has remained:

Error calling sequence Test UUTs.
Error loading step 'xyz' of sequence 'abc' in file 'def.seq'
LabVIEW: File permission error. You do not have the correct permissions for the file.

NOTE: Although this step is not in the main sequence, it is in the same file, and its
module load option is set to 'Preload when execution begins'.

To avoid this error in the future, change the step or sequence file module load option to 'Load dynamically'.

Error Code: -18004, An error occurred accessing the LabVIEW Run-Time Engine DLL. Source: 'TSAPI'

Any ideas as to what might have gone wrong please?

[bienieck]

Have you tried turn off and on again? No, seriously, have you tried it?

If sudden event caused this issue I would suspect some unknown state of one of the components. Reset should fix it. If not then it would be helpful to know what kind of files are created/altered in runtime by your sequence.

[Dave_RS]

Thank you for your reply and suggestions.
It appears that the access rights for the user account that was being used to access the test rig, were not sufficient. It was possible to run the test rig without faults by logging in under a user account with elevated access rights.