Error: Field can't be zero length string, when saving store information.

Error: Field can’t be zero length string, when saving store information.

This error is fixed in ver 3.0.18. It is caused by the new autocontract numbering feature which first appeared in 3.0.?. To bypass the error click on yes to autogenerate #’s enter a space in the prefix and number fields, then click back to no and save.