HI again Paul,
For the moment may I outline my procedure that occurred last night:
Start up Ve Pro machine, start 32bit and 64bit servers. Load my metaframe template for this project (a movie) into each. (each contains several instances, with labels like "LASS strings 1, LASS strings 2, pianos, drums, bass, EWQLSO GOLD PLAY, Orchestra FX etc)
Start DP7 machine, start DP7, open a file I had been working on.
DP7 had lost it's aux inputs (which were labeled VEPro LASS strings 1, VEPro LASS strings 2, VEPro pianos etc as above to reflect what is in the metaframes).
Re-created new aux inputs (new stereo bundles in DP7) etc to get it working again.
Continued writing and recording the music. SAVED the metaframes (32 and 64) (not save as). SAVED the file (DP7).
Closed the DP7 Song 1 file. Copied it. Renamed the copy (eg "Song 2"). Open Song 2.
This time VEPro metaframe attempted to load new instances. Crashed due to memory error (probably overloaded).
The day before, I had worked on a (lets say) SONG 1 file, completed it. Saved it. Re-opened it 4 hours later (after leaving the studio) and all of the VEPro Aux tracks in DP had lost their input assignments. In that particular case all I had done was saved the DP file after completing work. Closed it. No other work on either computer whatsoever. RE opened that same file 4 hours later to discover the above.
Please note this is not a "one off" event, for about a week now opening files has resulted in similar results but in previous cases I am not 100% sure what I did or didn't do that might have been user error in terms of saving the metaframes etc. I outline the 2 particular events above because I am sure of my step by step procedure there. But opening DP7.21 files this past week usually results in lost aux input assignments, disconnections from VEPro, and sometimes re-loading of the metaframes again, resulting in memory errors on the VEPro machine as it attempts to load large files on top of the material already loaded. Reading the mainal very carefully about how that can happen but I thought I had done everything correctly.
I will provide more info as I work further, and when I am sure of what I have done or not done. Thank you.