SEP Debugger not finding the right source

I have spent a good part of this morning helping a co-worker debug a
series of programs and subprocedures in service programs. We set a SEP
on the entry program and call it. All is good at this point. We step
into the code. Still good until we get to the first call to a
subprocedure. When we step into it, we get a screen telling us that
the source cannot be found. It has three buttons. If we select the
button for the compile listing, it works fine, but each time through
in debug is the same way. If we select the button to find the source
and browse to the correct, modified source in her development library,
It opens the source but always enters the subprocedure source at the
wrong line. Actually, it is not even in the correct subprocedure.

We have cleared the WDSc cache, removed all SEP's, stopped and
restarted the debug server and recompiled / recreated all programs and
service programs, including the modules, after confirming the
development library is at the top of the library list.

Also, we can debug this same series of programs from the GS (STRDBG)
without any problems.

What am I missing?

Kyle