Gives IndexError, any solution? #6
Description
Traceback (most recent call last):
20: from test.rb:5:in <main>' 19: from test.rb:5:in new'
18: from /var/lib/gems/2.5.0/gems/mathtype_to_mathml-0.0.7/lib/mathtype_to_mathml.rb:13:in initialize' 17: from /var/lib/gems/2.5.0/gems/mathtype_to_mathml-0.0.7/lib/mathtype_to_mathml.rb:13:in new'
16: from /var/lib/gems/2.5.0/gems/mathtype-0.0.8/lib/mathtype.rb:15:in initialize' 15: from /var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/base.rb:21:in read'
14: from /var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/base.rb:145:in read' 13: from /var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/base.rb:254:in start_read'
12: from /var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/base.rb:147:in block in read' 11: from /var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/struct.rb:139:in do_read'
10: from /var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/struct.rb:139:in each' 9: from /var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/struct.rb:139:in block in do_read'
8: from /var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb:295:in do_read' 7: from /var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb:295:in loop'
6: from /var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb:297:in block in do_read' 5: from /var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/struct.rb:139:in do_read'
4: from /var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/struct.rb:139:in each' 3: from /var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/struct.rb:139:in block in do_read'
2: from (eval):2:in do_read' 1: from /var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/choice.rb:109:in current_choice'
/var/lib/gems/2.5.0/gems/bindata-2.4.4/lib/bindata/choice.rb:115:in `instantiate_choice': selection '-77' does not exist in :choices for obj.equation[1].payload (IndexError)