Snapshot Plugin failed to create directory

I tried to run the Snapshot Plugin and got this error:
Unknown: errno:2 fopen(pclzip-501ae9d7637d2.tmp): failed to open stream: Permission denied /home/httpd/html/wearewomenmarch.net/public_html/wp-admin/includes/class-pclzip.php on line 2203

My sys admin "fixed it" and wrote the following:

It looks like the plugin didn't have a default temporary directory set, so it was trying to create files directly in wp-admin/includes (which isn't writable by the web server for security reasons). I've adjusted the plguin to default to using the system temporary directory (/tmp), which should resolve this. For reference, the changed line was as follows:

define( 'PCLZIP_TEMPORARY_DIR', '/tmp/' );

WILL THIS BE A PROBLEM?