L2Gen ifile warning

[feedback12345]

When I try to set up L2Gen and pass in the ...MTL.txt file into ifile, I get a warning that it isn't a valid input mission. The file route has no spaces in it -- what else might cause this issue?

[OB SeaDAS - knowles]

Please show the full file name so we can know whether it is a file from a mission supported by SeaDAS. I'm guessing it is Landsat (8 or 9) OLI. You can determine whether a mission file is valid using the "obpg_file_type" command at the command line:
For example:
obpg_file_type LC08_L1TP_015033_20220804_20220817_02_T1_MTL.txt
returns:
LC08_L1TP_015033_20220804_20220817_02_T1_MTL.txt: OLI L8: Level 1B