I'm so sorry to send this email again. I need an urgent answer for this
problem, and it seems that this mailing list is my last resort. 
This is my problem:

I have created an installer with "WiXUi.InstallDir". I need to check the
install path that the user selects and not let him continue the installation
if the path contains a space. The installation is continued when the user
choose a path which does not contain a space, and I don't want to break the
installation. How can I check this and inform the user that he must choose a
path without space in it?
I was told once that I may require a custom action, and I will be able to
use the >< operators to check for the space. I found no good explanation
about this. Can anybody help me about this more?
 
Thank you very much.

<<elephant_en.gif>>

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