java - Eclipse not showing UI properly -

java - Eclipse not showing UI properly -

i have transfered eclipse project pc laptop. java 3d project, , should show main frame buttons on buttonbar @ top, , on rest of screen display of simpleuniverse happens button stuff displayed, not actual java 3d thing, usual black of simpleuniverse , interactions supposed available not. instead, there grayness within frame. wierd thing comes along. when command buttons modifies in way branchgroup atached simpleuniverse, normal, functions work. think might due fact detach branchgroup, required changes , attach back. still, question remains.. why not work in first place?

p.s. libraries included , laptop works improve pc, has improve video card, 1gb ram more , improve processor, don't think hardware problem

java eclipse java-3d