bpduplicate to standalone tapedrive

Hello, 

I need to duplicate some backup images to a standalone tapedrive. I found posts how to add the tape and to label the tape with vmadd and bplabel. 
Also I found how to start duplicate the data to the tape in the stand alone tapedrive. I added two tapes with vmadd and bplabel to the tapedrive. 

But my tapedrive is an LTO2, which is native 200Gb and 400Gb compressed. The images I need to write to tape is about 460Gb. When the bpduplicate job is at about 370Gb the job just crashes and it doesn't let me add a new empty tape. 

Any ideas? 

Rob