This the beginning of .th file survey radavc_20141231_ms_a input radavc_20141231_ath2.th2 #input radavc_20141231_aEe.th2 map radavc_20141231_aM.map -projection plan radavc_20141231_aSP1 radavc_20141231_aSP2 break radavc_20141231_aSP2 endmap comment map radavc_20141231_aME radavc_20141231_aSE1 endmap endcomment centreline When I tried to compile it I received next error: "missing survey before map command“ The problem was in line: input radavc_20141231_ath2.th2 because -th2 file from some reason end with line: scrap xxx without line endscrap so all lines after input were used as part of scrap. m.s.