After downloading version 1.0 from:
https://downloads.sourceforge.net/portableapps/SumatraPDFPortable_1.0.pa...
I double click on the file to install it and it asks what language to install. After clicking the okay button it crashes. The program goes no further. I am using Windows XP with SP3. What am I doing wrong? I have never had this problem before. I downloaded a previous version and it installed with no problems. Please help.