On my first foray into foreach I am getting this error: Error in function (handle) : no function to return from, jumping to top level I get one of these for each worker. I am using the doMC/multicore back end. At first I thought this was caused by the text progress bars that the function inside my foreach call was trying to send to the console as a side effect, but I still get the error after turning that off. Despite the errors the evaluation continues and all hamsters appear to be running. The function inside happens to be reclass() from library(raster). Can anyone surmise what this might mean? I thought I would ask while I wait to see whether the output is valid. ( Cross-posted from Stackoverflow http://stackoverflow.com/q/4831882/590990) ----- Neil Best Computation Institute University of Chicago -- View this message in context: http://r.789695.n4.nabble.com/mysterious-error-from-foreach-tp3245203p3245203.html Sent from the R help mailing list archive at Nabble.com.