Please do not try to use Dropbox, Microsoft OneDrive, Google Drive or other cloud-based file hosting services for your free Windows/desktop version of SpendMap. It just doesn’t work.
You can certainly back up your system/database to those services; you just can’t install your active/live database there.
That’s because, as with other database applications, the files/tables in SpendMap’s database are constantly being opened and updated as you process Purchase Orders and other transactions in SpendMap. And when files are being copied/uploaded to those cloud-based file hosting services, they are locked and not accessible to SpendMap and so you will get a runtime error if SpendMap tries to access the files as they are being moved up to the cloud (which happens each time a file is modified).
That said, you can certainly 1) exit/close SpendMap and then, 2) copy your database folder to Dropbox, OneDrive or Google Drive as a backup, while SpendMap is not running. Again, you just can’t keep the live/active database files there. For more details, please see the section “Backup and Restore Procedures”, in the Getting Started Documentation that comes with the software.
And just as a reminder, if you want your SpendMap data to be stored in the Cloud, we offer a SaaS version as well. You can try a free demo of our Cloud-based Purchase Order Software here.