Converting Data from Timeslips 2011

SUGGESTED

I'm trying to get Timeslips to convert the data from my 2011 version.  When I get to the conversion, this is the error message I get:

Initializing...

Converting Database from 2015 to 2017

Database: C:\(Main.db directory)

Started : (date)

Converting BDE to Firebird

       Source database does not exist

Completed : (date)

Database failed to convert

The database directory is correct, and the Main data file is there.  I am using the 14 day trial version, but it should still work, from what I've read. 

Any ideas? 

Many thanks,

Patty