Client crash when sequence mdl is missing (e.g. 01.mdl)

[FreeSlave]

If sequence mdl (01, 02, etc.) is missing and game is trying to use the sequence, the client crashes in CStudioModelRenderer::StudioCalcBoneQuaterion.

I wonder if it's possible to handle in the game code so instead of crashing the game could show some meaningful error.

[nekonomicon]

I'm not sure if it's a good workaround, but fan PC port of Decay has such check:
https://github.com/hoaxer/Half-Life-Decay/blob/main/cl_dlls/StudioModelRenderer.cpp#L180

[FreeSlave]

panim is not null even if sequence file is missing.

It comes from StudioGetAnim which never returns null