Notes about the LAN file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The LAN file type is primarily associated with 'ERDAS IMAGINE' by Leica Geosystems , LLC. ERDAS IMAGINE is a broad collection of software tools designed specifically to process imagery.