* using log directory 'd:/Rcompile/CRANpkg/local/3.6/sprex.Rcheck'
* using R version 3.6.3 (2020-02-29)
* using platform: x86_64-w64-mingw32 (64-bit)
* using session charset: ISO8859-1
* checking for file 'sprex/DESCRIPTION' ... OK
* checking extension type ... Package
* this is package 'sprex' version '1.4.1'
* checking package namespace information ... OK
* checking package dependencies ... OK
* checking if this is a source package ... OK
* checking if there is a namespace ... OK
* checking for hidden files and directories ... OK
* checking for portable file names ... OK
* checking whether package 'sprex' can be installed ... ERROR
Installation failed.
See 'd:/Rcompile/CRANpkg/local/3.6/sprex.Rcheck/00install.out' for details.
* DONE
The installation logfile:
* installing *source* package 'sprex' ...
** package 'sprex' successfully unpacked and MD5 sums checked
** using staged installation
** R
** data
** byte-compile and prepare package for lazy loading
Error: object 'as.data.frame.ppp' is not exported by 'namespace:spatstat'
Execution halted
ERROR: lazy loading failed for package 'sprex'
* removing 'd:/Rcompile/CRANpkg/lib/3.6/sprex'
* restoring previous 'd:/Rcompile/CRANpkg/lib/3.6/sprex'