ecl bundle and eclcc fail if current directory not writable

C:\Program Files\HPCCSystems\7.0.12\clienttools>ecl bundle install -v https://github.com/hpcc-systems/Visualizer.git
Using eclcc path C:\Program Files\HPCCSystems\7.0.12\clienttools\bin\eclcc
Running C:\Program Files\HPCCSystems\7.0.12\clienttools\bin\eclcc --nologfile -showpaths
mkdir C:\Users\lordgrey\AppData\Local\Temp\\tmp.000041
Running git clone --depth=1 https://github.com/hpcc-systems/Visualizer.git C:\Users\lordgrey\AppData\Local\Temp\\tmp.000041\Visualizer
Running C:\Program Files\HPCCSystems\7.0.12\clienttools\bin\eclcc - --nologfile --nostdinc -Me --nobundles -IC:\Users\lordgrey\AppData\Local\Temp\\tmp.000041\Visualizer
with input IMPORT Visualizer.Bundle as B; [ (UTF8) B.name, (UTF8) B.version, B.description, B.license, B.copyright ] + [ (UTF8) COUNT(b.authors) ] + B.authors +  [ (UTF8) COUNT(B.dependsOn) ] + B.dependsOn +  [ (UTF8) #IFDEFINED(B.platformVersion, '')]
C:\Program Files\HPCCSystems\7.0.12\clienttools\bin\eclcc return code was 2
C:\Users\lordgrey\AppData\Local\Temp\tmp.000041\Visualizer\Visualizer.ecl(0,0): error C0005: WindowsCreateDirectory C:\Program Files\HPCCSystems\7.0.12\clienttools\.eclcc, Access is denied.

(1,30): error C2081: Import names unknown module "Visualizer"
(1,41): error C2167: Unknown identifier "B"
3 errors, 0 warning

eclcc reported:

https://github.com/hpcc-systems/Visualizer.git cannot be parsed as a bundle

ecl 'bundle' command error 0