Equation Editor Fails to print png (Windows 10, Zim-0.65)

Hi,

I have latex.exe and dvipng.exe installed and on my path via the MiKTeX distribution (typing latex.exe and dvipng.exe in the command line outputs file information ... seems to be working)

I'm just testing a simple latex command ($$ E = hv $$) to make sure it works, and nothing is being outputted. I'm having trouble interpreting the log file (see full log at at end), the only thing that seems to be going wrong is:

LaTeX Font Info: Try loading font information for U+msa on input line 11.
("C:\Program Files\MiKTeX 2.9\tex\latex\amsfonts\umsa.fd"
File: umsa.fd 2013/01/14 v3.01 AMS symbols A
)
LaTeX Font Info: Try loading font information for U+msb on input line 11.

("C:\Program Files\MiKTeX 2.9\tex\latex\amsfonts\umsb.fd"
File: umsb.fd 2013/01/14 v3.01 AMS symbols B
)
! Missing } inserted.
<inserted text>

Am I just missing a font?

Any advice? Thanks,
John
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Here is my log file for reference:
This is pdfTeX, Version 3.14159265-2.6-1.40.16 (MiKTeX 2.9 64-bit) (preloaded format=latex 2016.1.20) 20 JAN 2016 17:30
entering extended mode
**./equation.tex
(equation.tex
LaTeX2e <2015/10/01> patch level 2
Babel <3.9n> and hyphenation patterns for 69 languages loaded.
("C:\Program Files\MiKTeX 2.9\tex\latex\base\article.cls"
Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
("C:\Program Files\MiKTeX 2.9\tex\latex\base\size12.clo"
File: size12.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
)
\c@part=\count79
\c@section=\count80
\c@subsection=\count81
\c@subsubsection=\count82
\c@paragraph=\count83
\c@subparagraph=\count84
\c@figure=\count85
\c@table=\count86
\abovecaptionskip=\skip41
\belowcaptionskip=\skip42
\bibindent=\dimen102
)
("C:\Program Files\MiKTeX 2.9\tex\latex\amsfonts\amssymb.sty"
Package: amssymb 2013/01/14 v3.01 AMS font symbols

("C:\Program Files\MiKTeX 2.9\tex\latex\amsfonts\amsfonts.sty"
Package: amsfonts 2013/01/14 v3.01 Basic AMSFonts support
\@emptytoks=\toks14
\symAMSa=\mathgroup4
\symAMSb=\mathgroup5
LaTeX Font Info: Overwriting math alphabet `\mathfrak' in version `bold'
(Font) U/euf/m/n --> U/euf/b/n on input line 106.
))
("C:\Program Files\MiKTeX 2.9\tex\latex\amsmath\amsmath.sty"
Package: amsmath 2013/01/14 v2.14 AMS math features
\@mathmargin=\skip43

For additional information on amsmath, use the `?' option.
("C:\Program Files\MiKTeX 2.9\tex\latex\amsmath\amstext.sty"
Package: amstext 2000/06/29 v2.01

("C:\Program Files\MiKTeX 2.9\tex\latex\amsmath\amsgen.sty"
File: amsgen.sty 1999/11/30 v2.0
\@emptytoks=\toks15
\ex@=\dimen103
))
("C:\Program Files\MiKTeX 2.9\tex\latex\amsmath\amsbsy.sty"
Package: amsbsy 1999/11/29 v1.2d
\pmbraise@=\dimen104
)
("C:\Program Files\MiKTeX 2.9\tex\latex\amsmath\amsopn.sty"
Package: amsopn 1999/12/14 v2.01 operator names
)
\inf@bad=\count87
LaTeX Info: Redefining \frac on input line 210.
\uproot@=\count88
\leftroot@=\count89
LaTeX Info: Redefining \overline on input line 306.
\classnum@=\count90
\DOTSCASE@=\count91
LaTeX Info: Redefining \ldots on input line 378.
LaTeX Info: Redefining \dots on input line 381.
LaTeX Info: Redefining \cdots on input line 466.
\Mathstrutbox@=\box26
\strutbox@=\box27
\big@size=\dimen105
LaTeX Font Info: Redeclaring font encoding OML on input line 566.
LaTeX Font Info: Redeclaring font encoding OMS on input line 567.
\macc@depth=\count92
\c@MaxMatrixCols=\count93
\dotsspace@=\muskip10
\c@parentequation=\count94
\dspbrk@lvl=\count95
\tag@help=\toks16
\row@=\count96
\column@=\count97
\maxfields@=\count98
\andhelp@=\toks17
\eqnshift@=\dimen106
\alignsep@=\dimen107
\tagshift@=\dimen108
\tagwidth@=\dimen109
\totwidth@=\dimen110
\lineht@=\dimen111
\@envbody=\toks18
\multlinegap=\skip44
\multlinetaggap=\skip45
\mathdisplay@stack=\toks19
LaTeX Info: Redefining \[ on input line 2665.
LaTeX Info: Redefining \] on input line 2666.
)
("C:\Program Files\MiKTeX 2.9\tex\latex\graphics\color.sty"
Package: color 2014/10/28 v1.1a Standard LaTeX Color (DPC)

("C:\Program Files\MiKTeX 2.9\tex\latex\00miktex\color.cfg"
File: color.cfg 2007/01/18 v1.5 color configuration of teTeX/TeXLive
)
Package color Info: Driver file: dvips.def on input line 142.

("C:\Program Files\MiKTeX 2.9\tex\latex\graphics\dvips.def"
File: dvips.def 2014/10/14 v3.0j Driver-dependent file (DPC,SPQR)
)
("C:\Program Files\MiKTeX 2.9\tex\latex\graphics\dvipsnam.def"
File: dvipsnam.def 2014/10/14 v3.0j Driver-dependent file (DPC,SPQR)
)) (equation.aux)
\openout1 = `equation.aux'.

LaTeX Font Info: Checking defaults for OML/cmm/m/it on input line 8.
LaTeX Font Info: ... okay on input line 8.
LaTeX Font Info: Checking defaults for T1/cmr/m/n on input line 8.
LaTeX Font Info: ... okay on input line 8.
LaTeX Font Info: Checking defaults for OT1/cmr/m/n on input line 8.
LaTeX Font Info: ... okay on input line 8.
LaTeX Font Info: Checking defaults for OMS/cmsy/m/n on input line 8.
LaTeX Font Info: ... okay on input line 8.
LaTeX Font Info: Checking defaults for OMX/cmex/m/n on input line 8.
LaTeX Font Info: ... okay on input line 8.
LaTeX Font Info: Checking defaults for U/cmr/m/n on input line 8.
LaTeX Font Info: ... okay on input line 8.
LaTeX Font Info: Try loading font information for U+msa on input line 11.
("C:\Program Files\MiKTeX 2.9\tex\latex\amsfonts\umsa.fd"
File: umsa.fd 2013/01/14 v3.01 AMS symbols A
)
LaTeX Font Info: Try loading font information for U+msb on input line 11.

("C:\Program Files\MiKTeX 2.9\tex\latex\amsfonts\umsb.fd"
File: umsb.fd 2013/01/14 v3.01 AMS symbols B
)
! Missing } inserted.
<inserted text>
                }
l.12 $$ E = 1.5 $$\end{align*}

Here is how much of TeX's memory you used:
 1455 strings out of 493635
 17348 string characters out of 3143776
 65888 words of memory out of 3000000
 4875 multiletter control sequences out of 15000+200000
 8285 words of font info for 32 fonts, out of 3000000 for 9000
 1025 hyphenation exceptions out of 8191
 27i,7n,26p,234b,106s stack positions out of 5000i,500n,10000p,200000b,50000s

No pages of output.