It seems your versions don't match:
- DS is 4.2 SP2
- IS is 4.2 SP4
- And your .atl file comes from a 4.2 SP3 install.
- Reinstall DS and IS software. Make sure they're eaxctly the same version. Current is 4.2 SP7.
- Import/export is only upward compatible. You can never import a file from a more recent version into an older one