Web PVR Manager breaks with "Cannot fork" error

[Philip Colmer]

In order to have the PVR download recordings without direct interaction, I
leave the Web PVR Manager running and leave the web page open.

However, periodically, the command line window that is running the Web PVR
Manager will report the following:

INFO: Starting PVR Run
INFO: Win32 Command: ".\get_iplayer.cmd" --nopurge --nocopyright --hash
--pvr 2>
&1
GET: /
QUERY_STRING = NEXTPAGE=pvr_run&AUTOPVRRUN=4
INFO: Starting PVR Run
INFO: Win32 Command: ".\get_iplayer.cmd" --nopurge --nocopyright --hash
--pvr 2>
&1
GET: /
QUERY_STRING = NEXTPAGE=pvr_run&AUTOPVRRUN=4
INFO: Starting PVR Run
INFO: Win32 Command: ".\get_iplayer.cmd" --nopurge --nocopyright --hash
--pvr 2>
&1
GET: /
QUERY_STRING = NEXTPAGE=pvr_run&AUTOPVRRUN=4
INFO: Starting PVR Run
INFO: Win32 Command: ".\get_iplayer.cmd" --nopurge --nocopyright --hash
--pvr 2>
&1
Cannot fork at get_iplayer.cgi line 307.

and PVR then stops working.

Is there a fix for this, or should I be using a different method to keep the
PVR running all of the time?

This is version 2.86 running under Windows.

Regards

Philip