The string should be correct, as you can see if you enter it directly
in the URL bar and add the keyword after the last =.
Try to replace for testing only the string part of an existing engine in macros.cfg
that you normally do not use often and entering a keyword in the prompt should
lead you to Ixquick pictures.
If you succeed in doing that, try to copy and adapt the other string and add it
as a new engine.
Avoid copying the samples from the wiki, because they are corrupted since the
change in the wiki structure. You will see there question marks (?) that work
like links. It cannot work, if you copy these to a macro together with the
correct text.
P.S.:
If the macro structure should have been changed in the 1.1 version,
try to adapt it.
I have not yet studied this sufficiently up to now, as I still always
have to use the older versions here on Linux, because the new ones are
difficult to handle.
Fred