dbx start-up errors

Running 'dbx myprog' gives me the cryptic messages:

Reading symbolic information for myprog

Reading symbolic information for rtld /usr/lib/ld.so.1

dbx: fetch at 0xef7b8044 failed -- I/O error

dbx: fetch at 0xef7b8044 failed -- I/O error

dbx: fetch at 0xef7b8044 failed -- I/O error

dbx: internal error: could not iterate over load objects -- debugger service failed

The compile/debug tools are from Workshop 4.0 on Sol2.6

Can someone suggest how I can proceed to try and eliminate these errors so I can debug my program.

Thanks

[605 byte] By [sescoi] at [2007-11-25 23:41:25]