Re: Sha1sum Mismatch When Trying to Install GDIPlus :(

["DanKegel" <wineforum-user@xxxxxxxxxx>]

Try running winetricks verbosely, e.g.
  winetricks -v gdiplus 2>&1
or 
  sh -x winetricks gdiplus > log 2>&1
Then look at the log.  This already shows what you need, I think.
On my system, the interesting bit is

+ verify_sha1sum b9a84bc3de92863bba1f5eb1d598446567fbc646 /home/dank/.winetrickscache/./WindowsXP-KB975337-x86-ENU.exe
+ wantsum=b9a84bc3de92863bba1f5eb1d598446567fbc646
+ file=/home/dank/.winetrickscache/./WindowsXP-KB975337-x86-ENU.exe
++ sha1sum
++ sed 's/ .*//'
+ gotsum=b9a84bc3de92863bba1f5eb1d598446567fbc646
+ '[' b9a84bc3de92863bba1f5eb1d598446567fbc646x '!=' b9a84bc3de92863bba1f5eb1d598446567fbc646x ']'