This site contains older material on Eiffel. For the main Eiffel page, see http://www.eiffel.com.

Problems with earlier versions of ISE Eiffel

The problems described here no longer arise with current versions. If you still have ISE Eiffel 3, it is time to update to ISE Eiffel 5.


If the symptoms are any of the following, the solution may be easy.

The problems have been divided into the following categories:

If you are looking for an answer to a general Eiffel question, rather than observing apparently abnormal behavior, please turn to the common questions page.

Windows problems

Personal Eiffel for Windows does not properly work on Windows 95.
Personal Eiffel for Windows (version 3.3) was released before Windows 95. The good news is, you can download a few patches that will make the environment work properly on Windows 95. The better news is that ISE Eiffel 4 is of course designed from the start for Windows NT and Windows 95.

Eiffel for Windows crashes
Please check out that page before reporting a problem about Eiffel for Windows crashing. In particular, you must read it if you are using Windows 95.

Changing working drive
I cannot change the working drive with Personal Eiffel for Windows.

Unix problems

No EiffelBuild windows and tools
When I start EiffelBuild, I seem not to get some of the EiffelBuild windows and tools!

Generic derivation in creation type
There seems to be a bug when a generic derivation appears only in a creation type.
Please check this page regularly as it is often updated. If you have any interesting usage problems that you think would be useful additions to this page, then please email to eiffel@eiffel.com. If you think you have encountered a problem not listed here, you can report it from here.