Launching PowerShell Script from Eclipse IDE
I would probably use the -file argument, as in
-file "C:\PowershellScripts\script.ps1"
you may need to set the execution policy first if it's not already set to unrestricted on your system.
On my machine, a Windows 7 64-bit box with 64-bit Eclipse and a 64-bit jdk (1.6), I am able to get things to work if I set the "arguments" field to:
-executionpolicy unrestricted -file "c:\code\test.ps1"
An alternative that also worked for me was:
Set the application to launch as C:\Windows\System32\cmd.exe
Set the arguments field to something like:
/c "powershell -executionpolicy unrestricted -file c:\code\test.ps1"
That does seem excessively Rube Goldbergian to me, but it's worth a try to see if your problems can be worked around by using a normal shell.
I did briefly get symptoms similar to what you describe, but I can't reproduce them anymore.