Labview error code 11

[labview1958]

I have a LV in 6.0. I am trying to change it to a LV6.1. However my attempts fail. I get the following message.

An error occurred loading VI write to digital port.vi. Labview load error code 11: VI version (6.0) cannot be converted to the current labview version(6.1) because it has no block diagrams.

In my LV6.1, under the functions menu the entire DAQ section is missing?

Is my problem due to a faulty LV6.1 CD? I have attached the file concerned.

[altenbach]

Most likely, the subVI in question was saved without block diagram. This prevents it from being converted to a newer LabVIEW version and you're out of luck. Do you have a backup copy with block diagram?

Try to contact whoever made the original VI to either get a version with block diagram or in a different LabVIEW version.

It is typically a bad idea to remove the block diagram for reasons that should now be obvious. If you want to protect your code from inspection or modification, place a strong password on the diagram. This way, the VI can still be upgraded.

[M_Kunze]

I completly agree. Use passwords not remove diagram.

The option remove diagram made some sense in the past because some VOs run somewhat faster.
Now its better to use a password for upgrade and compatibility reasons.
I just use passwords and no one has broken it since.
I have tryed to find out something about the strength of the password protection by playing
around with Binary editors and two fully equal VIs except the password and it seams to be
very good and save.

With kind regards

Martin