Many PDF documents still throw a number of errors such as this:
  GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
when previewing or saving to a (PDF/PS) file.

The console output is:
okular(2853)/kdecore (KSycoca) KSycocaPrivate::openDatabase: Trying to open ksycoca from "/var/tmp/kdecache-pancho/ksycoca4"
okular(2853)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
okular(2853)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
okular(2853)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
okular(2853)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
okular(2853)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
okular(2853)/kparts KParts::ReadWritePart::setModified: setModified( false )
okular(2853)/kparts KParts::ReadWritePart::setModified: setModified( false )
okular(2853)/kdecore (trader) KMimeTypeTrader::query: query for mimeType  "application/pdf" ,  "okular/Generator"  : returning  1  offers
okular(2853)/okular (app) Okular::Document::requestPixmaps: request id=3 1214x1717@0
okular(2853)/okular (app) Okular::DocumentPrivate::sendGeneratorRequest: sending request id=3 1214x1717@0 async == true
okular(2853)/okular (app) Okular::Document::requestPixmaps: request id=3 1214x1717@0
okular(2853)/okular (app) Okular::Document::requestPixmaps: request id=4 78x110@0
okular(2853)/okular (app) Okular::DocumentPrivate::sendGeneratorRequest: sending request id=4 78x110@0 async == true

And then upon preview:
okular(2853)/kdeprint Okular::FilePrinterPreview::FilePrinterPreview: kdeprint: creating preview dialog
okular(2853)/kdeprint Okular::FilePrinterPreviewPrivate::getPart: querying trader for application/ps service
okular(2853)/kdecore (trader) KMimeTypeTrader::query: query for mimeType  "application/postscript" ,  "KParts/ReadOnlyPart"  : returning  2  offers
okular(2853)/kdeprint Okular::FilePrinterPreviewPrivate::getPart: Trying to create a part
okular(2853)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
okular(2853)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
okular(2853)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
okular(2853)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
okular(2853)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
okular(2853)/kparts KParts::ReadWritePart::setModified: setModified( false )
okular(2853)/kparts KParts::ReadWritePart::setModified: setModified( false )
okular(2853)/kdecore (trader) KMimeTypeTrader::query: query for mimeType  "application/postscript" ,  "okular/Generator"  : returning  1  offers
okular(2853)/okular (Spectre) GSGenerator::loadDocument: Page count: 1
okular(2853)/okular (app) Okular::Document::requestPixmaps: request id=3 88x124@0
okular(2853)/okular (app) Okular::DocumentPrivate::sendGeneratorRequest: sending request id=3 88x124@0 async == true
okular(2853)/okular (Spectre) GSGenerator::generatePixmap: receiving PixmapRequest(#3, async, 88x124, page 0, prio 1)
okular(2853)/okular (app) Okular::Document::requestPixmaps: request id=3 88x124@0
okular(2853)/okular (app) Okular::Document::requestPixmaps: request id=4 78x110@0
okular(2853)/okular (app) Okular::Document::requestPixmaps: request id=3 555x785@0
okular(2853)/okular (app) Okular::Document::requestPixmaps: request id=3 555x785@0
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
okular(2853)/okular (app) Okular::Document::requestPixmaps: request id=3 555x785@0
okular(2853)/okular (app) Okular::DocumentPrivate::sendGeneratorRequest: sending request id=3 555x785@0 async == true
okular(2853)/okular (Spectre) GSGenerator::generatePixmap: receiving PixmapRequest(#3, async, 555x785, page 0, prio 1)
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
okular(2853)/okular (app) Okular::DocumentPrivate::sendGeneratorRequest: sending request id=4 78x110@0 async == true
okular(2853)/okular (Spectre) GSGenerator::generatePixmap: receiving PixmapRequest(#4, async, 78x110, page 0, prio 2)
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1
GPL Ghostscript 9.06: Error: Font Renderer Plugin ( FreeType ) return code = -1

Reproducible: Always

Steps to Reproduce:
Open the attached file (embedding a Type1 font) with Okular and preview it.



Using Kubuntu 12.10 with: okular: 0.15.2, ghostscript: 9.06, libfreetype6: 2.4.10 and libspectre 0.2.7

The Freetype patch:
https://savannah.nongnu.org/bugs/?func=detailitem&item_id=35833 /
http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=9a55cb7a
and the followup:
https://savannah.nongnu.org/bugs/?func=detailitem&item_id=35847 / http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=b43e0f44
should have fixed the Font Renderer Plugin issue in 2.4.10, but obviously it didn't.
Does someone know whether libspectre comes bundled with an old version of freetype? Then I'd know whether to file this against freetype or libspectre.