I had a crash due to low memory (something else was eating up far too much) right when I was changing class (with '/player xyz allowcharselonce' and '.charsel'), but now my save is apparently corrupted, throwing this exception:
System.NullReferenceException: Object reference not set to an instance of an object.
at Vintagestory.GameContent.CharacterSystem.applyTraitAttributes(EntityPlayer eplr) in VSSurvivalMod\Systems\Character\Character.cs:line 322
at Vintagestory.GameContent.CharacterSystem.setCharacterClass(EntityPlayer player, String classCode, Boolean initializeGear) in VSSurvivalMod\Systems\Character\Character.cs:line 289
at Vintagestory.GameContent.GuiDialogCreateCharacter.OnGuiOpened() in VSSurvivalMod\Gui\GuiDialogCreateCharacter.cs:line 308
Any chance of rescuing that savegame somehow?