ImageMagick delegate library error

Question

I have recently installed ImageMagick and I am trying to use it to convert postscript files to .gif images. I ran the post installation test:

/usr/local/bin/convert logo: logo.gif

This works perfectly, but trying to convert my own does not. I am using a CentOS virtual machine.

This is what I first tried:

/usr/local/bin/convert Average.ps: average.gif

Nothing seems to happen, it's as if something is happening but nothing does.

Then I tried:

convert -list configure

I did this to see what files types are supported, I got:

DELEGATES mpeg ps

So I tried:

/usr/local/bin/convert Average.ps: average.mpeg

And the same thing happens. I also tried the above without the .ps just in case that would help.

When I run

display /root/Desktop/Average_1961.ps

I get this error:

display: delegate library support not built-in `' (X11) @ error/display.c/DisplayImageCommand/1906.

But the delegate library shows .ps and .mpeg support, and the install test created a gif, so I'm very confused.

Has anyone got any suggestions?

Thanks, Ciara