Load manager error

System config....737 NG installed, MS ACOF installed default location, OS XP pro SP2.Error reproductionInstalled 747-400 QOTSRan load manager from install dirattempted to save file to aicraft configI get one error dbox with nothing in it (no txt)followed by 1 warning dbox with nothing in it (no txtConfig file does get overwritten so it is changing, I'm not sure if the changes are correct though, overall fuel state does reflect correctly when plane is initilaized.I will attach more detail later after I've got home.... and looked at any interesting stuff in the application log. Paul Yates