i have downloaded it twice and it refuses to start up.
permissions look ok and its in win7 .
i have never had any other programs refuses to start up under win 7 so this is unique problem.
this is the error message
Problem Event Name: APPCRASH
Application Name: TeklaStructures.exe
Application Version: 18.104.22.16873
Application Timestamp: 52a814e6
Fault Module Name: ntdll.dll
Fault Module Version: 6.1.7600.16385
Fault Module Timestamp: 4a5bdadb
Exception Code: c0000005
Exception Offset: 000520bd
OS Version: 6.1.7600.2.0.0.256.1
Locale ID: 2057
Additional Information 1: db9f
Additional Information 2: db9fb101011960bf68f06b14526bed40
Additional Information 3: e8c7
Additional Information 4: e8c7f335ae7c8d453eef4a69820d8ce0