No, the paths must not have spaces, especially in Microsoft Windows platforms. For example, the following DOES NOT WORK:

set DXASDKDIR=C:\Program Files\Ebsotech IX™ SDK

If your Windows paths have spaces, you need to use the short names of the directories. For example, the short name of the above path is usually (but not necessarily):

set DXASDKDIR=C:\PROGRA~1\EBSOTE~1

You can find out the short names with the following command:

dir /x

Alternatively, you can also quote the spaces with the backslash character:

set DXASDKDIR=C:\Program\ Files\Ebsotech\ IX\ SDK

However, this notation is not recommended, as it may bring unexpected problems, especially in the future.