Wanted to post this in the event this occurs for any others:
Latest AyaNova 7.2 in use (including hotfixes)
Was running QuickBooks Pro 2013 US
Updated QuickBooks to Pro 2014
When tried to tried to link a customer in AyaNova to a customer in Quickbooks, as well as vice versa, receive error Parameter is not valid
Also received out of memory error
Troubleshooted by connecting using sample AyaNova and sample Quickbooks 2014 Pro company data file, and confirmed no issues.
Tested connecting sample AyaNova to live QuickBooks company data file, and confirmed no issues.
Tested connecting live AyaNova to sample QuickBooks 2014 Pro data file, and confirmed no issues.
Determined issue with the existing mappings between the live AyaNova and the live QuickBooks Pro 2014
To resolve, unmap existing links. Then automap to remap.