problem with some pdfs creating derivatives

[lsat12357]

Loaded datastream content oregondigital:qr46rj580/content (376.7ms)
Docsplit::ExtractionFailed: **** Page has no /MediaBox attribute. Using the current page size.
Error: /stackunderflow in --run--
Operand stack:
--dict:5/5(L)-- 612.0 792.0 3
Execution stack:
%interp_exit .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 %stopped_push --nostringval-- --nostringval-- --nostringval-- false 1 %stopped_push 1862 1 3 %oparray_pop 1861 1 3 %oparray_pop 1845 1 3 %oparray_pop --nostringval-- --nostringval-- 2 1 1 --nostringval-- %for_pos_int_continue --nostringval-- --nostringval--
Dictionary stack:
--dict:1157/1684(ro)(G)-- --dict:1/20(G)-- --dict:76/200(L)-- --dict:76/200(L)-- --dict:106/127(ro)(G)-- --dict:286/300(ro)(G)-- --dict:21/25(L)-- --dict:2/6(L)--
Current allocation mode is local
GPL Ghostscript 8.70: Unrecoverable error, exit code 1
gm convert: Postscript delegate failed (/tmp/oregondigital-qr46rj580-content.020180605-838-wo2sie.pdf).
from /usr/local/rbenv/versions/2.0.0-p353/lib/ruby/gems/2.0.0/gems/docsplit-0.7.2/lib/docsplit/image_extractor.rb:47:in `block in convert'

[lsat12357]

seems to be a bug that was noted and fixed
https://bugs.ghostscript.com/show_bug.cgi?id=690676
fixed source code here
https://sourceforge.net/projects/ghostscript/files/GPL%20Ghostscript/8.71/