I posted a new version 4.0 that should fix this, allows you to save to a file.
I tried to maintain backwards compatibility, however, the new version needs to rename and move a few directories, its possible this process will fail so make sure to backup first.
To update:
1. Exit Aquarium Lab
2. Backup c:\program files\aquariumlab\ (or your install directory)
3. Download and run version 4
http://www.aquariumlab.com/download/aquariumlab.exeIf something goes wrong, you can go back to the old version by restoring
c:\program files\aquariumlab\ from your backup.
To do a new install:
1. Delete c:\program files\aquariumlab\
2. Download and run version 4
http://www.aquariumlab.com/download/aquariumlab.exe