There was an error during MASM5 compilation: “End of file” instead of “END directive”.

This error is typically caused by the MASM compiler not being able to find the correct END directive in the source file.

The solution is as follows:

1. The conclusion of the matter
2. Check your source files to ensure they are complete and not missing any code or instructions. If anything is missing, supplement it and recompile.
3. Check your source files for any syntax errors. If there are errors, fix them before recompiling.
4. Make sure that the file extension of your source file is .asm. If it is not, change the file extension to .asm and recompile.

If the above methods still do not solve the problem, further inspection of your source files and compiler settings may be needed to determine the root cause of the issue.