Hi All, I am a new user of R currently trying to profile memory usage of some R code with summaryRprof in R version 2.7.2 in Windows. If I use the memory = "both" option in summaryRprof(), I have no problems viewing the profiling of both the time and memory usage. However if I try to use memory = "stats," I get the following error: Error in tapply(1:4369L, list(index = c("source:eval.with.vis", "source:eval.with.vis", : arguments must have same length Furthermore, if I set memory to "tseries," I receive the following error: Error in data.frame(..., check.names = FALSE) : arguments imply differing number of rows: 4369, 9369 I enabled profiling by setting memory.profiling = TRUE in the call to Rprof(). Has anyone else had this problem? Any suggestions on ways to go about fixing this error? Thanks for your time, JL Davis