r - Corrupted Double Linked List -

i running analysis in parallel in r. analysis runs without issue. added argument determine whether, in each node, code produces graphs @ end of each iteration of analysis. has introduced new error:

error in unserialize(socklist[[n]]) : error reading connection 

the per-node log files indicate error occurs during plotting. have tried slight modifications of code, work more errors have appeared.

*** error in `/usr/lib/r/bin/exec/r': free(): invalid pointer: 0x0000000000a9eaa8 *** *** error in `/usr/lib/r/bin/exec/r': corrupted double-linked list: 0x00007f5c3338f5e0 *** *** error in `/usr/lib/r/bin/exec/r': free(): invalid pointer: 0x000000000070daa8 *** *** error in `/usr/lib/r/bin/exec/r': double free or corruption (!prev): 0x00007f365231d220 ***     

googling suggests these errors related c++ code underlying ggplot2's functions, not sure how begin debugging compiled c++ code referenced r.

currently, have not been able replicate errors using minimal example. gist provides idea of doing / plotting: https://gist.github.com/elizabethab/9dfc377eb7b2773c3d6e

please see below session information.

> sessioninfo() r version 3.2.0 (2015-04-16) platform: x86_64-pc-linux-gnu (64-bit) running under: ubuntu 14.04.2 lts  locale:  [1] lc_ctype=en_us.utf-8       lc_numeric=c               lc_time=en_us.utf-8        lc_collate=en_us.utf-8      [5] lc_monetary=en_us.utf-8    lc_messages=en_us.utf-8    lc_paper=en_us.utf-8       lc_name=c                   [9] lc_address=c               lc_telephone=c             lc_measurement=en_us.utf-8 lc_identification=c         attached base packages: [1] parallel  stats     graphics  grdevices utils     datasets  methods   base       other attached packages:  [1] ggally_0.5.0        ggmap_2.4           boot_1.3-15         snow_0.3-13         mass_7.3-40         caret_6.0-47         [7] ggplot2_1.0.1       lattice_0.20-31     rgdal_0.9-3         sp_1.1-0            reshape2_1.4.1.9000 dplyr_0.4.1.9000    [13] plyr_1.8.2.9000     stringr_1.0.0.9000   loaded via namespace (and not attached):  [1] rcpp_0.11.6         nloptr_1.0.4        iterators_1.0.7     tools_3.2.0         digest_0.6.8        lme4_1.1-7           [7] nlme_3.1-120        gtable_0.1.2        mgcv_1.8-6          png_0.1-7           matrix_1.2-0        foreach_1.4.2       [13] dbi_0.3.1           mapproj_1.2-2       brglm_0.5-9         sparsem_1.6         proto_0.3-10        bradleyterry2_1.0-6 [19] maps_2.3-9          rgooglemaps_1.2.0.7 gtools_3.5.0        grid_3.2.0          nnet_7.3-9          reshape_0.8.5       [25] r6_2.0.1            jpeg_0.1-8          rjsonio_1.3-0       minqa_1.2.4         car_2.0-25          magrittr_1.5        [31] scales_0.2.4        codetools_0.2-11    splines_3.2.0       assertthat_0.1      pbkrtest_0.4-2      geosphere_1.3-13    [37] colorspace_1.2-6    labeling_0.3        quantreg_5.11       stringi_0.4-1       lazyeval_0.1.10     munsell_0.4.2       [43] rjson_0.2.15        

my solution

i uninstalled ggplot2 , reinstalled source. cleared issue.