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FS#997 - Empty drawing after "transaction failed message"
But after some hours of work, I stumbled over a quite nasty bug: I tried to draw a polyline in model space, and got a “transaction failed” message (although the current layer was not locked) and then suddenly all entities in the drawing just disappeared. I checked my block definitions, and they too were empty. I therefore saved the drawing under a new name and closed it. However, there was no sign of qcad becoming unstable - it opened the previous version of the file without problems (I restarted the program nonetheless...).
Attached are the empty file (V1-2_corrupted.dwg), the last intact save before (V1-2.dwg), and logs of the command line as well as of the console.
Running audit in BricsCAD on V1-2.dwg just lists 57 errors like this:
Hope this can give some hints - if not, don’t waste time on it, I would come back to it should I encounter such a problem again.