dbx,internal error?

[Erwin Dondorp I84]

Hi there, I am using dbx, I use it all the time but now somethings
strange happpens: it exits itself saying:
	dbx: fatal error: Is a directory
It does so because it opens a empy file "" which on unix is eq. to "."
Now I am using SunOS 4.0.1.
The error is not in respons to something in a core dump, it does 
this all the times.
I suspect it has something to do with the getwd call but cannot figure out
how to fix it.

	Erwin