You could attempt to recover the file and see what happens. If the file has data you don't want to lose this may return your file to a state where at least some of your data may be accessible. You might want to use FMP 10.03 to recover an earlier copy of the file. Sometimes one release of filemaker will identify file damage that another does not identify so your file may have already had a problem before you tried to open it with FMP 10.
Given the nature of your error message, you might also want to run checkdisk or another utility to verify that your hard drive is OK.
Note: recovered files should not be used if you have any alternative such as an undamaged backup copy.