"Unable to unzip" drush make error

I was puzzled by the “unable to unzip” error that I get when I change the make file. What is strange is that tar.gz files are extracted without errors.

I am using XAMPP 1.8.0, with PHP 5.4.4, on Windows 7, and the makefile is launched from xampp / htdocs / mysite. I ran this make file many times without errors on our dedicated Linux server, but I am running it now on my own laptop.

I'm not an expert on the mime type, but the error seems to be related to this. Code from the command line is shown below. Any help with this would be greatly appreciated! Thank.

https---github.com-downloads-tinymce-tinymce-tinymce_3.4.7.zip          [notice]

retrieved from cache. [121.66 sec, 6.23 MB]
tinymce downloaded from                                                     [ok]

https://github.com/downloads/tinymce/tinymce/tinymce_3.4.7.zip.
[121.68 sec, 6.23 MB]
No fileinfo or mime_magic support available. [121.68 sec, 6.23 MB]       [debug]

Examining                                                                [debug]

C:\\\\Users\\\\myname\\\\AppData\\\\Local\\\\Temp/make_tmp_1347382411_504f6c8bb8c5
2/tinymce_3.4.7.zip
headers. [121.68 sec, 6.23 MB]
Mime type for                                                           [notice]

C:\\\\Users\\\\myname\\\\AppData\\\\Local\\\\Temp/make_tmp_1347382411_504f6c8bb8c5
2/tinymce_3.4.7.zip
is application/zip [121.68 sec, 6.23 MB]
No fileinfo or mime_magic support available. [121.68 sec, 6.23 MB]       [debug]

Examining                                                                [debug]

C:\\\\Users\\\\myname\\\\AppData\\\\Local\\\\Temp/make_tmp_1347382411_504f6c8bb8c5
2/tinymce_3.4.7.zip
headers. [121.68 sec, 6.23 MB]
Mime type for                                                           [notice]

C:\\\\Users\\\\myname\\\\AppData\\\\Local\\\\Temp/make_tmp_1347382411_504f6c8bb8c5
2/tinymce_3.4.7.zip
is application/zip [121.68 sec, 6.23 MB]
Unable to unzip