R devel - May 2020 - "not a valid win32 application" with rtools40-x86_65.exe on Windows 10

Hello, All:


 ????? "00install.out" from "R CMD check Ecfun_0.2-4.tar.gz"
includes:


Error:? package or namespace load failed for 'Ecfun':
 ?.onLoad failed in loadNamespace() for 'rJava', details
 ? call: inDL(x, as.logical(local), as.logical(now), ...)
 ? error:? unable to load shared object 'c:/Program 
Files/R/R-4.0.0/library/rJava/libs/i386/rJava.dll':
 ? LoadLibrary failure: ^1 is not a valid win32 application


 ????? This was after installing R 4.0.0 and "rtools40-x86_64.exe"
under
Windows 10 Pro 64-bit.


 ????? Suggestions?
 ????? Thanks,
 ????? Spencer Graves


sessionInfo()
R version 4.0.0 (2020-04-24)
Platform: x86_64-64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 18362)

Matrix products: default

locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CCTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252

attached base packages:
[1] stats?? graphics?? grDevices? utils?? datasets?? methods?? base

loaded via a namespace (and not attached):
[1] compiler_4.0.0

Are you missing the 32-bit Java JDK?

Cheers,
S
> On 30/04/2020, at 4:37 PM, Spencer Graves <spencer.graves at
prodsyse.com> wrote:
> 
> Hello, All:
> 
> 
>       "00install.out" from "R CMD check
Ecfun_0.2-4.tar.gz" includes:
> 
> 
> Error:  package or namespace load failed for 'Ecfun':
>  .onLoad failed in loadNamespace() for 'rJava', details
>   call: inDL(x, as.logical(local), as.logical(now), ...)
>   error:  unable to load shared object 'c:/Program
Files/R/R-4.0.0/library/rJava/libs/i386/rJava.dll':
>   LoadLibrary failure: ^1 is not a valid win32 application
> 
> 
>       This was after installing R 4.0.0 and "rtools40-x86_64.exe"
under Windows 10 Pro 64-bit.
> 
> 
>       Suggestions?
>       Thanks,
>       Spencer Graves
> 
> 
> sessionInfo()
> R version 4.0.0 (2020-04-24)
> Platform: x86_64-64-mingw32/x64 (64-bit)
> Running under: Windows 10 x64 (build 18362)
> 
> Matrix products: default
> 
> locale:
> [1] LC_COLLATE=English_United States.1252
> [2] LC_CCTYPE=English_United States.1252
> [3] LC_MONETARY=English_United States.1252
> [4] LC_NUMERIC=C
> [5] LC_TIME=English_United States.1252
> 
> attached base packages:
> [1] stats   graphics   grDevices  utils   datasets   methods   base
> 
> loaded via a namespace (and not attached):
> [1] compiler_4.0.0
> 
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>

On Thu, Apr 30, 2020 at 6:38 AM Spencer Graves
<spencer.graves at prodsyse.com> wrote:
>
> Hello, All:
>
>
>        "00install.out" from "R CMD check
Ecfun_0.2-4.tar.gz" includes:
>
>
> Error:  package or namespace load failed for 'Ecfun':
>   .onLoad failed in loadNamespace() for 'rJava', details
>    call: inDL(x, as.logical(local), as.logical(now), ...)
>    error:  unable to load shared object 'c:/Program
> Files/R/R-4.0.0/library/rJava/libs/i386/rJava.dll':
>    LoadLibrary failure: ^1 is not a valid win32 application
>
This is an error in loading the rJava package, so it is not related to
rtools40, and probably inappropriate for this mailing list.

As Simon suggested, you may have to install the 32-bit Java JDK. See
also this faq:
https://github.com/r-windows/docs/blob/master/faq.md#how-to-install-rjava-on-windows

Hi, Jeroen et al.:


On 2020-04-30 03:15, Jeroen Ooms wrote:
> On Thu, Apr 30, 2020 at 6:38 AM Spencer Graves
> <spencer.graves at prodsyse.com> wrote:
>> Hello, All:
>>
>>
>>         "00install.out" from "R CMD check
Ecfun_0.2-4.tar.gz" includes:
>>
>>
>> Error:  package or namespace load failed for 'Ecfun':
>>    .onLoad failed in loadNamespace() for 'rJava', details
>>     call: inDL(x, as.logical(local), as.logical(now), ...)
>>     error:  unable to load shared object 'c:/Program
>> Files/R/R-4.0.0/library/rJava/libs/i386/rJava.dll':
>>     LoadLibrary failure: ^1 is not a valid win32 application
>>
> This is an error in loading the rJava package, so it is not related to
> rtools40, and probably inappropriate for this mailing list.
>
> As Simon suggested, you may have to install the 32-bit Java JDK. See
> also this faq:
https://github.com/r-windows/docs/blob/master/faq.md#how-to-install-rjava-on-windows

 ????? In fact I had both 32- and 64-bit Java installed but only the 
64-bit was in the path.? I added the 32-bit, but that did not fix the 
problem.? The last 2.5 lines in the section "How to install rJava on 
Windows?" to which you referred me reads:


to build rJava from source, you need the --merge-multiarch flag:

install.packages('rJava', type = 'source',
INSTALL_opts='--merge-multiarch')


 ????? When I tried that, I got:


Warning in system("sh ./configure.win") : 'sh' not found


*** ON THE OTHER HAND:? The error message above says 'c:/Program
Files/R/R-4.0.0/library/rJava/libs/i386/rJava.dll':
 ?? LoadLibrary failure: ^1 is not a valid win32 application


 >>>> Is "rJava.dll" a valid win32 application?


 ????? Suggestions?
 ????? Thanks,
 ????? Spencer Graves


p.s.? A similar problem with rJava a month ago was fixed by installed 
64-bit Java.? Now with the upgrade to R 4.0.0 and rtools40, this no 
longer works.