Could you please provide your plugin environment that would include your versions of both the base plugin and the ProPack versions and any other add-ons. (see posting guidelines)
The error messages are fairly self explanatory. If you exported to a csv file and then imported them , were any of the locations duplicates or do you have the same add-ons and fields on your staging site that you have on your live site?
Most likely your first row in your CSV file that was exported contains the sl_field names…therefore , when you import make sure to check off First row has data field names: There are check boxes and online docs in the back end
Skip First Line
Skip the first line of the import file.
First Line Has Field Name
Check this if the first line contains the field names. Text must match the approved field name list.
The Import instructions