since v0.79 working directory paths fixed: update your scripts where needed
Since version v0.79 of the plugin, the path for the storage of .RData has been fixed. Therefore, the working directory is not the root tiki temp folder any more, but a subfolder under the ./temp/cache folder.
Therefore, if your R calls where using some hardcoded relative paths to directories in your own server (I know some users affected by this... 
which have already been warned about the issue and solution off-list already), you can easily solve this issue by placing a setwd() call at the start of your R code, in order to get your paths adapted to the new location.
More info about setwd, for instance, at:
http://www.statmethods.net/interface/workspace.html
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