I'm using Eclipse Indigo Service Release 2 (Build id: 20120216-1857) on Microsoft Windows 7 (all available service releases and updates installed) with JRE 1.6 update 35 64-bit. If I run my program using jcurses via a external tool configuration I get the following error:
ERROR: JDWP Unable to get JNI 1.2 environment, jvm->GetEnv() return code = -2
I didn't get that error before I updated my JRE. Unfortunately I'm not sure which JRE I have used when it worked. Maybe update 30. But it was also the 64-bit version.