Phillip,
This problem has been reported by some users of Matlab 7 SP2 using
either SPM2 or SPM5b. A workaround was posted in this list some weeks ago:
At Matlab prompt, type:
feature('JavaFigures',0);
immediately before opening SPM. It should work.
Regards
Anderson
Philipp Saemann schrieb:
>Hello SPM-users,
>
>while defining a t-contrast in an ANCOVA model from the basic models menu
>(VBM) having two groups and one nuisance variable, SPM2 does not accept the
>contrast vector
>
>-1 1 0 0
>
>(third column is empty in the design, fourth column is the nuisance variable)
>
>but SPM2 notes 'no valid contrast defined'. The same with the opposite
>contrast 1 -1 0 0.
>
>Writing permissions etc. have been checked, this seems alright.
>
>Only the standard effects of interest F-contrast can be submitted and
>displayed.
>
>Is this some bug in the contrast parser? (Matlab 7 is used). SPM2 has been
>downloaded only recently.
>
>Thanks a lot in advance,
>
>Philipp
>
>
>
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