It seems that the error arises when the package cannot be decompressed by R (as @rawr established, it is corrupt). This solutions have worked for me:
1) Check for possible errors in the creation of the .Rdb files
2) Try restarting your R session (e.g. .rs.restartR() if in RStudio)
3) The package might have been installed in your computer (even though it does not work). Remove it using ?remove.packages()