引用自 Artfunkel：

Seems like a corrupted install to me. Try deleting the addon with Blender's Preferences window and downloading it again.

It works! Thank you so much!

and seeing as it is my birthday, I'd appreciate your help.

So I finally managed to compile my SMD file from blender into VVD/MDL/VTX files, and import them into sfm, the two parts of the model where displaced and missed a texture, I thought it would be an easy fix, just combine the two parts into one, it's not like I need to separate them anyways, so I went through the whole process again with crowbar, and the QC file and all that, but now, it's just straight up invisible.

Please, help.

i installed the blender source engine tools as instructed, but when i go to scene properties >> source engine export, the only thing under it is the export path, and export button, no choice between smd/dmx, no engine path, nothing.

does anybody know why this is and how to fix it?