Hallo,
the YAWL Editor 3.0.1 (Build 586-587) has problems to open a spec file.

Here the Video:
http://ul.to/l24b5g5u

What operating system and which Java version do you use? Does the behaviour occur because you are using a subnet?

Could you send me the spec that causes this behaviour by eMail?

I had problems under Ubuntu loading the spec before. Now, with the latest editor build 588 it works. Can you please update and retry?