Old x11/Motif code

My old X11/openmotif GUI code compiled & ran fine under Fedora FC7 (32 
bit).  With my new FC9 x86_64 OS & lesstif, it seems to compile, 
however, it doesn't run.  I only see the following error message:

[vcable@ezrider]$ fdtd_vc_GP

Warning: XmManager ClassInitialize: XmeTraitSet failed
Error: attempt to add non-widget child "DropSiteManager" to parent 
"fdtd_vc_GP" which supports only widgets

[vcable@ezrider]$


Any hints of what's wrong? 

  -- Vaughn
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