Sorry! After much frustration, I finally figured it out. I was using the wrong settings on the Blender .OBJ export. I no longer get this error.

 

First, I cloned the "Talking Table" and exported it to a .OBJ file. Then I made a simple table in Blender, and exported it to an .OBJ file. I imported that .OBJ file to UVmapper classic and exported it once again as an .OBJ file. Finally, I tried to import that .OBJ file into SimPE, but recieved the message : "Index was out of range. Must be non-negative and less than size of collection. Parameter name: index."