Archicad has been riddled with t/w bugs and errors. common issues are "could not send changes" or "teamwork failed to..." messages.
if you are getting a crash on s/r, it could be a local data or gemoetry error, not necessarily a t/w error (even if triggered by s/r).
Double check:
-library loading report (eliminate missing/duplicates where possible)
-total embedded library size (aim for under 300 MB)
-individual e/l content (avoid all images or objects over 10mb)
-session report (hunt down all elements with missing attributes, invalid geometry, etc.)
-review polycount (requires installation of goodies package; reduce model to below 3m polygons, eliminate individual elements over 20-30,000 polygons, or any element contributing more than 25% of total polygons
-clean up attributes (remove unused profiles and composites, clean up all attributes for missing sub-attributes)
-check for excessive solid element operations (any element with more than 30-50 targets or operators can be a crash trigger)
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lastly, check for file bloat on the server manager. If you duplicate the file on the server, and the file size is reduced by 25% or more, that could indicate that there is significant bloat in the database. You can try to resolve this by saving a .pln, open and repair, then share as a new t/w file.
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unfortunately, AC has become a program that has required users and/or BIM managers/coordinators to trouble shoot these kinds of bugs/errors on a weekly, if not daily basis. Regular project health audits (items listed above are a good start), scrupulous file and model management practices, and a lot of patience in 'testing things out' should get you to a more healthy and reliable file.
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for t/w health, I recommend s/r hourly, r/a whenever you are going to be away from your computer, close all ac files at the end of every day, leave all t/w files and clear your local data caches at the end of every week.
BIM solutions and trouble shooting (self proclaimed) expert. Using Archicad 26 5002 US on Mac OS 11.5.2
