Failure retrieving libpng-1.6.29.tar

[mawelsh]

While running setup.py attempt to retrieve source for libpng returns:

wget : The remote server returned an error: (550) File unavailable (e.g., file not found, no access). At C:\gr-build\scripts\Setup.ps1:80 char:9

• ... wget $toGet -OutFile "$archiveName$archiveExt" -UserAgent ...

• 
  + CategoryInfo          : InvalidOperation: (System.Net.FtpWebRequest:FtpWebRequest) [Invoke-WebRequest], WebExcep
  tion
  + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand

[mawelsh]

It looks like 1.6.34 should be the currently targeted version.

[gnieboer]

Yes, this is a common issue. I'll update this weekend.

[gnieboer]

Updated scripts to v1.5 with numerous updated dependencies.