For step B, try searching for folder named 'scaleio' (don't remember the exact path)  Try this path for step D:C:\ProgramData\VMware\vCenterServer\cfg\vsphere-client\vc-packages\      
Hi,  ScaleIO plugin failed to execute some tasks while was deploying the environment. I've selected option to rollback whole deployment, but the rollback process stucked. I've rebooted VCSA, re-installed the plugin. Even after re-installation the plugin shows "Rollback in progress", so I can't start new installation. How can I fix that?
ScaleIO 1.32 rollback for VMware