Saving Project Fails

[lewis]

If you load in some data and send it to a perspective (other than fitting), then go to File→Save Project and try to save, you get an error message saying "NoneType object has no attribute firstChild" (see attached screenshot).
If data is first sent to the fitting perspective, then to another perspective before attempting to save, a different error message is shown (see other attached screenshot)

[lewis]

Error message shown when data is sent to a pespective (other than fitting)

[lewis]

Error message shown when data is sent to fitting, then to another perspective

[krzywon]

I believe this is a duplicate of #960 where any empty fit pages throw errors. I tested this in the 4.1.1 release and saving and loading a project with no fits worked. The fix for this is not in master yet, and is waiting for the 4.1.2 release to be finalized which is why it is still likely occurring.

[lewis]

Sending data to fitting, then another perspective, then saving now works. However, loading in the save file created fails.

Sending data to a perspective other than fitting then saving the project still throws an error

[krzywon]

This was a different issue than #960. The new reader infrastructure was breaking the loading of projects. I applied a fix in pull request 94, 4.1 issues, after resolving the conflicts with master.

[butler]

This particular error is fixed in PR 94. There may (probably still are) saving issues remaining

[krzywon]

Opening a save state that only has a p(r) is still throwing an error. I am reopening this ticket.

[krzywon]

In 7b07fbe306fb8a4fe61838f12a869394e2e47c0a/sasview:

Move generic loading functions from cansas_reader into file_reader_base_class. Cascade changes to other readers. refs #985

[krzywon]

PR109 had work to solve the saving/loading issue.