Because Ulead VideoStudio 11 is legacy software (released around 2007), this error is almost always caused by compatibility issues between the old program files and modern versions of Windows (Windows 10/11).
If running as Administrator didn't work, the software may be struggling to communicate with the Windows kernel. ulead video studio 11 error unable to load library
If the program opens successfully, you will need to do this every time, or you can set it permanently: Because Ulead VideoStudio 11 is legacy software (released