After installing Quickmap, you may get this error:

Quickmap: Unexpected Error Encountered

Exception of type ‘System.OutOfMemoryException’ was
thown..

This error occurs if you have installed Quickmap without the Topo data (in other words, you have installed the Quickmap software without a valid data directory installed on the computer).

To fix this, download and install the Quickmap data, or change the Quickmap data location.