To install Alienbob's multilib 15.0 files failed: md5sum error

I wasn't able to install a couple of Alienbob files on Slackware 15.0.

Code:slackpkg update gpg
slackpkg update
slackpkg upgrade multilib
slackpkg upgrade-all
slackpkg install multilibCode:==============================================================================
WARNING! One or more errors occurred while slackpkg was running
------------------------------------------------------------------------------
aaa_libraries-compat32-15.0-x86_64-19compat32.txz.asc: md5sum
lcms2-compat32-2.13-x86_64-2compat32.txz.asc: md5sum
aaa_libraries-compat32-15.0-x86_64-19compat32.txz.asc: md5sum
lcms2-compat32-2.13-x86_64-2compat32.txz.asc: md5sum

==============================================================================

!!! F A T A L !!!
Some operation has failed and need attention!!

Install FAILED: multilib:aaa_libraries-compat32-15.0-x86_64-19compat32.txz : please retry.
Install FAILED: multilib:lcms2-compat32-2.13-x86_64-2compat32.txz : please retry.

==============================================================================Have you guys any ideas what was wrong?