I chaps. I keep having the following problem, and the only resolution I've found is to scrap what I've been doing and start again
Put simply, I have a simple sketch (attached) that complains about conflicting constraints 12, 31, 33, 45, 47, 79 constraints that I don't have. The sketch is nicely green showing that I have zero degrees of freedom despite the notice. I can't delete the constraints, because they don't exist (or rather, they are not shown.... but wait....)
When I exit sketch, the constrained sketch disappears, and I get a few white lines that reflect the very early steps of the sketch I created. The same number of lines as conflicting constraints. I cannot select these lines as the vanish on entering the sketch.
If I hold "space" whilst in the sketch, the white lines do appear on-off-on-off-on-off on repeat, so I can get to see them, but they are unelectable .
I am running Debian jessie/sid, so my OS is pretty fresh, but it's been a few weeks since I did an aptitude upgrade.
Has anyone else seen this, or can reproduce the problem with my file?
Edit. I know exactly how to reproduce the problem now. Attached are two files showing the design progression up to the point it goes bad (three steps). First I draw the containing frame, second sketch in the shapes, third join up the nodes. Now, what I am doing is selecting the two nodes to join by dragging the select box around them. They turn green and I connect them. This generates the following errors:
Not able to delete a constraint on point with the given index: 7
Not able to delete a constraint on point with the given index: 5
Not able to delete a constraint on point with the given index: 3
Not able to delete a constraint on point with the given index: 1
Not able to delete a constraint on point with the given index: 0
Not able to delete a constraint on point with the given index: -1
Not able to delete a constraint on point with the given index: 35
If I click both nodes specifically with the mouse pointer (which is sometimes a lot of trouble, particularly with a trackpad!) and connect them, then everything is fine.
Attached are the files that illustrates the problem.
OS: Debian GNU/Linux unstable (sid)
Version: 0.14.3637 (Git)
Python version: 2.7.7rc1
Qt version: 4.8.6
Coin version: 4.0.0a
SoQt version: 1.6.0a
OCC version: 6.7.0