For years I've use a simple macro to copy sets of fixed format text
files into a related excel workbook, one workbook per set of input
files (up to ~60) and one new worksheet per input file. The input
files are about 400 rows x 20 columns. No problem in excel 2000.

However in Excel 2007 the same macro crashes, at the copy sheet line,
with the error message "Excel cannot insert the sheet into the
destination workbook because it contains fewer rows and columns that
the source workbook".

Has anyone got an explanation and/or a workaround for this in E2007?
Reverting to Excel 2000 isn't a long-term option.

TIA

John