Using ExportPDF to convert to HTML

I keep on receiving this error when trying to convert to HTML, but I've got the suggested environment variable defined.

Error Code:80023
Error Message:  ALC-PDG-080-023-Acrobat_PATH environment variable either not set or is invalid.  Please set this variable to point to Acrobat.exe in Acrobat version 9 with  update 1. Acrobat_PATH should be set to <Acrobat_Home>\Acrobat  9.0\Acrobat\Acrobat.exe. Here <Acrobat_Home> is the parent folder where  the Acrobat is installed.

P.S.  I can use ExportPDF to convert to image format just fine (tif,jpeg,etc.)  I also can open acrobat and convert a pdf to HTML without any problem on the server as well.