I've upgraded a Buffalo WHR-HP-G300N from 15.05. to 15.01.1. Despite the "keep settings" was checked, nano wasn't kept (it was the only additional software, as the space is quite sparse for installations here). I intended to add the package later on, but it won't install, saying there's not enough space:
The UI (under System/Software) says at the top: Free space: 9% (36.00 KB)
If I try to install it in the shell, I get the following output:
Installing nano (2.4.1-1) to root...
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/ar71xx/generic/packages/packages/nano_2.4.1-1_ar71xx.ipk.
Installing libncurses (5.9-2) to root...
Collected errors:
* verify_pkg_installable: Only have 36kb available on filesystem /overlay, pkg libncurses needs 117
* opkg_install_cmd: Cannot install package nano.
Have the relevant packages grown since 15.05, or could there be some leftovers from previous installations I can clear manually to free up space for this?