To add, edit or delete store data (Products, Categories, Images, etc.), the Cart allows importing CSV (Comma Separated Value) files to help save time. When you're importing CSV files for the first time there are a few common troubleshooting items that can help you resolve potential complications.
Could not load file or assembly 'FileHelpers, Version=220.127.116.11, Culture=neutral, PublicKeyToken=3e0c08d59cc3d657' or one of its dependencies. The system cannot find the file specified.
The filehelpers.dll is included in the SmithCart install zip which can then be copied to your \bin folder. The reason its not copied during the install is because it requires full trust.