[TTG]

Finally got this to work but when I run a standard vbcron, the sig data is updated but I get a load of code in the admin :-

?PNG  IHDR
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?w??c??'?n?w`?5??~??35ܡ ?V ?z
???qw?~հ?q??????԰?q???p?s??w??O ??w
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n?AĻ[`r?a???.3???F"???L58@@`L?)˦?k??@1?<͢g??ه?5??J ????B??ʟ_?δ??e??R K &*?kcCᤵ??R???p??B?t?\К<{?ڢnrD?QbD01F?͵?%)???1Wud?44??U?I??hu?x??+?k??Γ??
???4c_?TF ???7ΌF"?AP+?Ȕ?Q???Z???bD????}?? pu??u/??w7?t??~Yv?? ?'???ƾ7?o?]F ???kQ?];
 ??Z9Le??1??A?}DD??Dz13 ?L?+?? F??/?.?lz:l_????I ?H?"P?X?z?N 
@??T??,?V0fT?? h?c??L?nۏ? ʳ҈Md7?6?8 P???r??D\????|0*?2?2TB?E? ???*???;????o??nzvfyy1?3@