ineligible to efile Illinois return because of a valuation limitation amount on Schedule M

I can't efile my IL return as it shown "ineligible to efile Illinois return because of a valuation limitation amount on Schedule M".   And I checked with IL Tax Department that the valuation limitation only applies to line 23 of Schedule M.   Since I only have entry on line 22 on Schedule M and nothing on line 23,  is it due programming glitches?  Can anyone help?