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Hi All

I just got my new Rostock Max v2. The first night I got it printing but the things were not just right so I saved the STL file. the next day after I calibrated the temp of the print head and the bed I tried to open the files again and I keep getting this error. Sorry if this is a dumb question but I am very new.
I have changed the working Dir and tried to slice again but to avail. Hope you can help. If this is a simple fix be kind with reply

Never mind got it! wrong speed.

I get the error more and more now, So I switched to CURA for g-code generation and only user repetier-Host for machine control.