Thanks! On Win7 the prefs are in C:\Users\<user>\AppData\Roaming\.opensim\3.3.0x64 (I had to set Windows Explorer to show hidden files to find it). It was indeed read only, so I set it to read/write. OpenSim still didn't work right until I uninstalled, removed the preference directory and all the Op...

When I open Opensim 3.3, it shows a netbeans interface. For example, File menu has Open File and Open Recent File and Page Setup, but nothing about opening a model or setting Preferences. If I open an osim file it displays the text. There must be some configuration issue. I installed in Windows 64 u...

I have the same issue, on CMC version 3.1.0 on ubuntu. Mine is an upper torso model moving an arm, and it happens every time at t=0.33, with the error "IO.OpenFile(const string&,const string&): failed to open ./results//cmcModel.osim_states.sto. That file exists with permissions 644 and its size is ...