Years with up-to-date Windows 7 Home Premium), which has 64-bit architecture. The existing problem, however, seems to be the other way around, e.g., my older machine (3 years with up-to-date Windows 7 Home Premium) is the laptop with 32-bit architecture on which the application runs as expected.

Thank you for your reply and suggestions. No sense in wasting hours and hours trying to make the program open S&T 2011 files on my desktop, when it does so flawlessly on my notebook of same configuration. Since the repair / re-install didn't bring any improvements I will try to completely uninstall the trial and do another installation from scratch. The only difference being that my desktop Both computers are Lenovo, both run on MS Windows 7 Home Premium Service Pack 1. For reasons beyond my comprehension everything works fine there. Just for good measure I installed the trial version on my Notebook. Have they implemented a country limitation as I am located in Germany? I wonder why, as I bought version 2011 from there. I am just happy the the microsoft store has rejected my attempt to buy the license for the latest download version of the program. What could have gone wrong, or what can I do to fix this? Is this a known, yet unpublished limitation of the trial version? If so, how should I sensibly evaluate the versions and compare? The program first tells me that it needs to convert my file and after I say 'ok' it comes back with the message that it cannot open the file and that I should check for compatible formats information - which I ran the repair / re-install, but to no avail.

It installed fine, but it will not open any of my former files, not even the ones created just before in version 2011. Today I gave in to the offer to install the free trial version of S&T 2013. I am a user of Streets & Trips for many years and until now used version 2011.

Streets and trips 2013 a