Did you see QuickBooks POS Error 1330? Well, this issue is usually experienced due to an invalid data signature. Often when you try to install version 7 of point of sale on windows XP, such an error can be seen. This error can be a bit dramatic to handle for the QuickBooks users and so it has to be fixed immediately. To help you get rid of this issue, we have come up with this segment sharing the complete information about this error, along with some quick fixes that you can carry out.