[tex-live] Further ghostscript problems, this time epstopdf

[Alois Steindl]

I have some difficulties running epstopdf with TeXLive 2018 (and gs 9.26 
in cygwin64)

When I call it, I get the message:

  Warning: GenericResourceDir doesn't point to a valid resource directory.
                the -sGenericResourceDir=... option can be used to set this.

Setting the variable GenericResourceDir appropriately, epstopdf works 
fine. Seaching for the error message in Google returns quite old results.

Strangely I see many references to "/texlive/2018/tlpkg/tlgs/Resource/", 
when I run epstopdf with --debug, even if I unset all GS_FONTPATH 
entries. My TeXLive resides in E:/texlive, so somehow the "E:" seems to 
get somehow lost.

Does anyone encounter the same problem? For me it occurs at two quite 
similar Notebooks with Windows 10.

With kind regards

Alois