# 260 Restructuring a Data File and Deleting Field(s) Causes an Invalid Field Number Error

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DBSYS -- Having converted my files I'm trying to split one file into two. I made copies of the DAT, IDX, and BLB files. In one file I dropped about 10 or 15 columns off the end of the table, after saving the table was empty. On the other table, I can't delete one of the columns. I delete it, when I hit save I get a "successfully restructured" message followed by "Error #9985 Invalid field number or name 4 specified for data file . . ." where the data file mentioned is a TMP2.DAT file in the DBSYS directory, not the directory my data file is in. After this happens I cannot restructure any file, once I pick a file I get a "Cannot make a visible window modal" error Also, the field was not removed from the datafile. (PS, it was in fact the fourth field in the file I was trying to delete.).