A user inherrited an Excel 97 workbook which seems to have reached its maximum number of custom formats. He needed to create a new format, but was told that the maximum number had been reached. He deleted some of the formats he did not appear to be using, and created the new format required. He then saved this book and emailed it to another user. The user made some data changes and emailed the file back. The book now seems to have lots of custom formats again and some of the cells have lost their formatting altogether.<br><br>Are custom formats specific to a certain workbook or sheet, or to the machine the user is using? Could a corruption be causing this problem?<br><br>Any help would be greatly appreciated.<br><br>Thank you<br><br>Nicky Trew