Bug report #12740
Algorithms sometimes disappear from the toolbox
|Affected QGIS version:||2.8.1||Regression?:||No|
|Operating System:||Easy fix?:||No|
|Pull Request or Patch supplied:||No||Resolution:|
|Crashes QGIS or corrupts data:||No||Copied to github as #:||20839|
That's explained in the subject.
Many users are facing this issue. During my courses I hear them complaining they can't find some algorithms I ask them to use, simply because thay're not listed correctly. If they switch between Simplified/Advanced Interface (maybe a couple of times) the algorithm node appears again.
I haven't been able to find a rule to reproduce it, but it happened to me too various times.
#4 Updated by Victor Olaya over 8 years ago
- Priority changed from Normal to Severe/Regression
i am raising the priority of this to Blocker
The issue seems to be in the SAGA provider, that sometimes is not correctly initialized (After the change i introduced to autodetect the SAGA version), so SAGA algorithms do not appear. Switching the toolbox mode refreshes the provider, so that's why it fixes the issue
#5 Updated by Victor Olaya over 8 years ago
- Status changed from Open to Feedback
Not able to reproduce this in Win, but it fails most of the time (althoug not always)in Mac, raising an IOError if saga is run on startup
I could not find a solid explanation of why that happens, and not a lot of info on the error after googling about it.
For now, I have implemented a retry mechanism which seems to do the trick. I also added some improvements for the SAGA initialize process itself.
It is in 77ca802
Please, test and close the ticket if this is solved