Cache won't refresh with obsolete get_iplayer < 3.13

Bit of a beginner at this so apologies if I don't provide all info or am missing something obvious.

I have been running get player on my iMac (OS High Sierra) for a while now without issues.  However for the past two weeks the cache will no longer refresh.  It starts to, the dotted line gets half way across the screen and then it stops and says
info: 0 matching programmes
Flushed programme caches for Types: radio

Underneath are buttons to click for forced refresh and close.

Thanks in advance for any help.
I can tell from the output that you are not using the latest version of get_iplayer. Old versions are broken and not supported. Upgrade and try again.

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