error virtual table

[killer]

everytime i create a new kdevDialog i get some errors because
    "Error: can not find blabla::virtualTable" or such shit...

what does it mean ?! its mistake ?
if i choose "alles säubern & neu erstellen" all works fine !
please show me the right way !
and: i think, if bigger the sourcecode, bigger are the errors i got from
kdevelopment !
if it do a autosave, some informations are lost

system:    linux suse 6.1
qt:                1.44


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