Custom thumbnails don't generate

Hi, Thank you for a plug-in that solved exactly what I needed to do. Now I just need to make things prettier and could use your help. (& I have the latest version of DG.)

I’ve seen threads here on this but none that are quite helping me. My PDFs are just showing the generic icon. I’d love them to auto-generic “Fancy” which I have checked in the settings. In lieu of this working, when I tried to replace that with something of my own I get this error message:

(DG_Thumber::thumbnailGenerationHarness) Failed to get image editor: No editor could be selected.

I do have Ghostscript supposedly, since it’s checked off in settings and has an absolute path listed in Advanced settings.

And if this helps any, here’s my array code – thank you for your time!:

Array
(
[thumber] => Array
(
[gs] => /usr/bin/gs
[active] => Array
(
[av] => 1
[gs] => 1
[imagick] =>
[thumber-co] =>
)

[width] => 200
[height] => 200
)

[thumber-co] => Array
(
[uid] =>
[secret] =>
[subscription] => Array
(
)

[direct_upload] =>
[mime_types] => Array
(
)

)

[gallery] => Array
(
[columns] => 4
[fancy] => 1
[order] => ASC
[orderby] => menu_order
[relation] => AND
[limit] => -1
[mime_types] => application,video,text,audio,image
[paginate] => 1
[post_status] => any
[post_type] => attachment
[descriptions] =>
[new_window] =>
[attachment_pg] =>
[skip] => 0
)

[css] => Array
(
[text] =>
)

[meta] => Array
(
[version] => 4.2.2
[items_per_page] => 10
[donate_link] => https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=EE5LWRLG933EN&lc=US&item_name=Document%20Gallery%20Plugin&item_number=document%2dgallery¤cy_code=USD&bn=PP%2dDonationsBF%3abtn_donateCC_LG%2egif%3aNonHosted
)

[logging] => Array
(
[enabled] => 1
[purge_interval] => 7
)

)

https://ww.wp.xz.cn/plugins/document-gallery/