Fix Windows issues.

Normand Briere

2019-05-05 d7bc8865056ea0d35df261e719f92e1422af7c6e

 PhysicsEditor.java
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@@ -190,6 +190,7 @@
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 	void Refresh()
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 	{
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+                new Exception().printStackTrace();
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             System.exit(0);
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 		System.out.println("Biparam :: Refresh");
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         physicsnode.gravity = (float)gravityField.getFloat(); // biparam.minUDivs, 99);