General Description: Project Navigator 4.1i will load project files and allow me to create and edit source code; however, when I attempt to synthesize, Project Navigator hangs.
解决方案
This situation will exist if you have the XIL_GUI_INSTANCECHECK variable set to 0 in your environment. To avoid the problem, set the variable to 1, or delete it altogether.
NOTE: This variable exists to allow multiple copies of Design Manager to run at the same time.