Trouble converting eps with the -clip parameter

[photopix]

Hi

Windows Server 2008R2 64bit
IM 5.7.5 64bit
Gs 9.05 64bit

When i try this without the -clip setting it works just fine, but when adding the -clip i can't do the conversion.
I know that GhostScript is needed for PostScript conversion and i have installed it, but either this is a bug or i have missed something.

C:\Users\user1>convert "D:\51812.eps" -density 72x72 -scale 284x284 -alpha transparent -clip -alpha opaque "D:\51812.eps"
convert.exe: no clip path defined `D:\51812.eps´ : No such file or directory @ error/image.c/ClipImagePath/702.
convert.exe: unable to open image `D:\51812.eps´ : Permission denied @ error/blob.c/OpenBlob/2614

[photopix]

I did a complete un install and then i re installed Gs first and then IM
Now it works, don't ask me why, but it does.