The reason for this is that Resin has changed its packaging model and requires some additional setup to work correctly:
* Configure the Resin connector normally from MyEclipse
* Then, on the Resin 3 > Paths preference page: In the 'Append to classpath' box, add all jars in the <resin>/lib directory *except* resin.jar * In the 'Append to library path' box, add <resin>/bin
The original thread about this is here
, take a look if you run into any problems.