Hi Joseph,
if you had Calc1 installed, please delete the system environment variable CALC_HOME and install CALC2 again, but make sure to completely remove from the hard disk the old CALC1 installation folder; this is necessary because you need to make sure that the current user must have write permission (CALC1 used to require admin privileges, CALC2 no).
After having installed Calc2, please clear the cache of your browser also.
There are several advantages in using Calc2, e.g a redesigned Sampling design page, a more robust integration with R. In fact now, to execute a processing chain you need to download the chain from the home calculation page (click the download r button); extract it, and open RStudio with the current working directory set where the calc.r file is located. To execute the chain, just run calc.r.calc.r.
Please let us know if you face additional problems.
Thank you
Mino