vauvarin/options-framework-theme — comment on commit 7636ad3522a129869b8689cf9cdaa8be44fec9fc
File:  line 0
By vauvarin:

I tested the script on my local and online server with a new theme and can't reproduce any bug.

Try to desactivate all your plugins before testing the option-theme-framework(import/export), there are maybe a conflict ?