Input string was not in a correct format

[calvinypark]

in Pdf.IO\Lexer.cs, line 568 (probably applies to 567 as well), if _nextChar == ' ' (empty space) for whatever reason, Input string was not in a correct format error is thrown.

[calvinypark]

I'm using pdf version 14 if that helps

[ststeiger]

I presume this is when reading a PDF.
Can you upload a minimal PDF with which I can reproduce this error ?