Unable to export my file to STL

I am unable to export this file for some reason. I was able to do so previously, but I had to adjust some sizes so they were printable. After doing so, I am no longer able to export the file. I am not sure what is causing the issue.
Please help!

image|666x500

Hi, this seems like an issue with the source file or did you create the entire design in Shapr3d?