Project Fails to Open

[Nick]

I created a project with CCPNMR3 and was assigning peaks to carbon atoms as per the instructions in the sequential backbone assignment tutorial. When I got to my 21st peak, I got an error saying something along the lines of

“pop into empty deque”

I can’t open the project to recreate the error now – when I try to open it, I get the following error:

The project does not reload the last saved position… it just fails to open anything.

As such, in the current state, I have lost my progress (which wasn’t that much). But I would far prefer to use v3b5 over v2.4.2 because I enjoy the workflow much more.

Log file is attached – any help is appreciated.

[Brian Smith]

The error message comes from one of the checks in the setup of an instance of class Shift that happens at line 134895 of ccpnmodel/ccpncore/api/ccp/nmr/Nmr.py. By inserting a line to tell me what the _ID of the Shift that was problematic was, I could find it in the ccpnv3/ccp/nmr/Nmr/.xml file and it was an NMR.Shift that indeed had no NMR.Resonance.shifts that referenced it. Deleting the rogue NMR.Shift seems to restore the project to a workable state.

Full thread:

https://www.ccpn.ac.uk/forums/showthread.php?tid=39&pid=161#pid161

[VickyH]

Ed says that a fix for this should be on the update server.