I recently installed a fresh RTC client.

One of the SCM components in our Jazz repository contains .o files
(object files) that are, by default, ignored by the default global
Eclipse platform ignore list.

So, because RTC's .jazzignore feature can't be used to override the
Eclipse platform ignore list, I edited the Platform Ignore List to
remove the *.o reference. All was well, until I restarted the RTC
client. Now, each time RTC starts, it complains by throwing up a dialog
box titled

"Verify Ignore List Change"

The text in the box says

This client has different ignore rules from the last client that
opened this workspace. This may change which resources are shared.

Platform ignore rules changes:
(a list of ignored .o files are shown)

I press cancel, and the RTC client continues without further trouble.

When I look at the Eclipse platform ignore list, *.o is still not
checked (meaning that *.o files shouldn't be ignored) so I'm mystified
as to why this dialog box is presented.

Any help appreciated

Dave