Hi,
I create a test program in Qt4.3 and compile it using Visual Studio 2005.
At the time of compiling, there has no errors. But when I run that program
, the program start running and after some 2 sec it display an error and crash. The error is like this. Any one know why this error?

First-chance exception at 0x65100c40 (QtGuid4.dll) in Test.exe: 0xC0000005: Access violation reading location 0x00000000


Please help me to find the reason of this error?