Imports are recursively defined?

What does it mean to get this error?

    Imports are recursively defined?

Here is the stack dump.  When this happens if I recompile the
VirtualBasicFile(BasicFile)>>from:mode:handle:director: method it works
fine.  Some days later it begins to fail again.  Weird.

QuerySignal>>valueFor:default:
GeneralNameSpaceImport(NameSpaceImport)>>resolve:at:
GeneralNameSpaceImport(NameSpaceImport)>>search:starting:withProtection:do:
[] in
GeneralNameSpaceImport(GeneralBindingReference)>>bindingOrNilWithProtection:
GeneralNameSpaceImport(GeneralBindingReference)>>resolveWithProtection:orDo:
GeneralNameSpaceImport(GeneralBindingReference)>>bindingOrNilWithProtection:
GeneralNameSpaceImport(GeneralBindingReference)>>bindingOrNil
GeneralNameSpaceImport(GeneralBindingReference)>>valueOrDo:
GeneralNameSpaceImport>>bindingFor:modifiers:
optimized [] in GeneralNameSpace>>bindingFor:modifiers:
BlockClosure>>ensure:
NameSpaceSearchRules>>forNames:do:
NameSpaceOfClass(GeneralNameSpace)>>bindingFor:modifiers:
BasicFile class(Class)>>bindingFor:modifiers:
BasicFile class(Behavior)>>bindingFor:
DeferredBinding>>resolveBinding
DeferredBinding>>value
VirtualBasicFile(BasicFile)>>from:mode:handle:director:      <- - -   I
recompile this method
VirtualBasicFile class>>description:mode:handle:director:length:

-Carl Gundel, author of Liberty BASIC
http://www.libertybasic.com