Solved issues when models cannot be created

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/cropcc@152 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
UTF-8

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/cropcc@153 edb9625f-4e0d-4859-8d74-9fd3b1da38cb