Unable to print - hplip plugin failure with hplip-3.15.7

This is on Arch Linux 64bit with a LaserJet Pro MFP M127fn, while using hplip-3.15.7 and corresponding plugin version. The cups web interface mentions "filter failed". The output of hp-check -t is:

---------------
| SYSTEM INFO |
---------------

 Kernel: 4.1.4-1-ARCH #1 SMP PREEMPT Mon Aug 3 21:30:37 UTC 2015 GNU/Linux
 Host: jpdesktop
 Proc: 4.1.4-1-ARCH #1 SMP PREEMPT Mon Aug 3 21:30:37 UTC 2015 GNU/Linux
 Distribution: unknown
 Bitness: 64 bit

-----------------------
| HPLIP CONFIGURATION |
-----------------------

HPLIP-Version: HPLIP 3.15.7
HPLIP-Home: /usr/share/hplip
warning: HPLIP-Installation: Auto installation is not supported for unknown distro version

Current contents of '/etc/hp/hplip.conf' file:
# hplip.conf. Generated from hplip.conf.in by configure.

[hplip]
version=3.15.7

[dirs]
home=/usr/share/hplip
run=/var/run
ppd=/usr/share/ppd/HP
ppdbase=/usr/share/ppd
doc=/usr/share/doc/hplip-3.15.7
html=/usr/share/doc/hplip-3.15.7
icon=/usr/share/applications
cupsbackend=/usr/lib/cups/backend
cupsfilter=/usr/lib/cups/filter
drv=/usr/share/cups/drv/hp
bin=/usr/bin

# Following values are determined at configure time and cannot be changed.
[configure]
network-build=yes
libusb01-build=no
pp-build=yes
gui-build=yes
scanner-build=yes
fax-build=yes
dbus-build=yes
cups11-build=no
doc-build=yes
shadow-build=no
hpijs-install=yes
foomatic-drv-install=yes
foomatic-ppd-install=yes
foomatic-rip-hplip-install=no
hpcups-install=yes
cups-drv-install=yes
cups-ppd-install=yes
internal-tag=3.15.7
restricted-build=no
ui-toolkit=qt4
qt3=no
qt4=yes
policy-kit=no
lite-build=no
udev_sysfs_rules=no
hpcups-only-build=no
hpijs-only-build=no

Current contents of '/var/lib/hp/hplip.state' file:
[plugin]
installed = 1
eula = 1
version = 3.15.7

Current contents of '~/.hplip/hplip.conf' file:
[last_used]
device_uri = hp:/net/HP_LaserJet_Pro_MFP_M127fn?ip=10.10.1.42
printer_name = HP_LaserJet_Pro_MFP_M127fn
working_dir = .

[installation]
date_time = 08/09/15 20:16:15
version = 3.15.7

[settings]
systray_visible = 0
systray_messages = 0

[commands]
scan =

[refresh]
rate = 30
enable = false
type = 1

[polling]
enable = false
interval = 5
device_list =

[fax]
voice_phone =
email_address =

[upgrade]
notify_upgrade = false
last_upgraded_time = 1439164341
pending_upgrade_time = 0

 <Package-name> <Package-Desc> <Required/Optional> <Min-Version> <Installed-Version> <Status> <Comment>

--------------------------
| External Dependencies |
--------------------------

 gs GhostScript - PostScript and PDF language interpreter and previewer REQUIRED 7.05 9.16 OK -
 error: xsane xsane - Graphical scanner frontend for SANE OPTIONAL 0.9 - MISSING 'xsane needs to be installed'
 cups CUPS - Common Unix Printing System REQUIRED 1.1 2.0.4 OK 'CUPS Scheduler is running'
 dbus DBus - Message bus system REQUIRED - 1.8.20 OK -
 avahi-utils avahi-utils OPTIONAL - 0.6.31 OK -
 policykit PolicyKit - Administrative policy framework OPTIONAL - 0.113 OK -
 network network -wget OPTIONAL - 1.16.3 OK -
 scanimage scanimage - Shell scanning program OPTIONAL 1.0 1.0.24 OK -

-------------------------
| General Dependencies |
-------------------------

 libpthread libpthread - POSIX threads library REQUIRED - b'2.21' OK -
 libusb libusb - USB library REQUIRED - 1.0 OK -
 cups-devel CUPS devel- Common Unix Printing System development files REQUIRED - 2.0.4 OK -
 sane-devel SANE - Scanning library development files REQUIRED - 1.0.24 OK -
 python3-reportlab Reportlab - PDF library for Python OPTIONAL 2.0 3.2.0 OK -
 sane SANE - Scanning library REQUIRED - 1.0.24 OK -
 python3-devel Python devel - Python development files REQUIRED 2.2 3.4.3 OK -
 python3-pyqt4 PyQt 4- Qt interface for Python (for Qt version 4.x) REQUIRED 4.0 4.11.4 OK -
 python3-pyqt4-dbus PyQt 4 DBus - DBus Support for PyQt4 OPTIONAL 4.0 4.11.4 OK -
 python3-xml Python XML libraries REQUIRED - 2.1.0 OK -
 libcrypto libcrypto - OpenSSL cryptographic library REQUIRED - 1.0.2 OK -
 cups-image CUPS image - CUPS image development files REQUIRED - 2.0.4 OK -
 libjpeg libjpeg - JPEG library REQUIRED - - OK -
 error: python3-notify2 Python libnotify - Python bindings for the libnotify Desktop notifications OPTIONAL - - MISSING 'python3-notify2 needs to be installed'
 python3X Python 2.2 or greater - Python programming language REQUIRED 2.2 3.4.3 OK -
 python3-pil PIL - Python Imaging Library (required for commandline scanning with hp-scan) OPTIONAL - 1.1.7 OK -
 libnetsnmp-devel libnetsnmp-devel - SNMP networking library development files REQUIRED 5.0.9 5.7.3 OK -
 python3-dbus Python DBus - Python bindings for DBus REQUIRED 0.80.0 1.2.0 OK -

---------------
| COMPILEDEP |
---------------

 libtool libtool - Library building support services REQUIRED - 2.4.6 OK -
 gcc gcc - GNU Project C and C++ Compiler REQUIRED - 5.2.0 OK -
 make make - GNU make utility to maintain groups of programs REQUIRED 3.0 4.1 OK -

----------------------
| Python Extentions |
----------------------

 cupsext CUPS-Extension REQUIRED - 3.15.7 OK -
 hpmudext IO-Extension REQUIRED - 3.15.7 OK -

-----------------------
| Scan Configuration |
-----------------------

 hpaio HPLIP-SANE-Backend REQUIRED - 3.15.7 OK 'hpaio found in /etc/sane.d/dll.conf'
 scanext Scan-SANE-Extension REQUIRED - 3.15.7 OK -

-----------------------
| Other Dependencies |
-----------------------

------------------------------
| DISCOVERED SCANNER DEVICES |
------------------------------

device `hpaio:/net/HP_LaserJet_Pro_MFP_M127fn?ip=10.10.1.42' is a Hewlett-Packard HP_LaserJet_Pro_MFP_M127fn all-in-one

--------------------------
| DISCOVERED USB DEVICES |
--------------------------

No devices found.

---------------------------------
| INSTALLED CUPS PRINTER QUEUES |
---------------------------------

HP_LaserJet_Pro_MFP_M127fn
--------------------------
Type: Printer
Device URI: hp:/net/HP_LaserJet_Pro_MFP_M127fn?ip=10.10.1.42
PPD: /etc/cups/ppd/HP_LaserJet_Pro_MFP_M127fn.ppd
warning: Failed to read /etc/cups/ppd/HP_LaserJet_Pro_MFP_M127fn.ppd ppd file
PPD Description:
Printer Rendering completedLaserJet_Pro_MFP_M127fn is idle. enabled since dim. 09 août 2015 20:11:47 EDT
Required plug-in status: Installed
Communication status: Good

HP_LaserJet_Pro_MFP_M127fn_fax
------------------------------
Type: Fax
Device URI: hpfax:/net/HP_LaserJet_Pro_MFP_M127fn?ip=10.10.1.42
PPD: /etc/cups/ppd/HP_LaserJet_Pro_MFP_M127fn_fax.ppd
PPD Description: HP Fax2 hpcups
Printer status: printer HP_LaserJet_Pro_MFP_M127fn_fax is idle. enabled since dim. 09 août 2015 20:10:01 EDT
Required plug-in status: Installed
Communication status: Good

--------------
| PERMISSION |
--------------

-----------
| SUMMARY |
-----------

Missing Required Dependencies
-----------------------------
None

Missing Optional Dependencies
-----------------------------
None

Total Errors: 2
Total Warnings: 0

####################################################

cups error log mentions:

D [06/Aug/2015:16:48:52 -0400] [Job 28] prnt/hpcups/Hbpl1.cpp 52: Hbpl1 constructor : m_szLanguage = HBPL1STATE: +hplip.plugin-error
D [06/Aug/2015:16:48:52 -0400] [Job 28] prnt/hpcups/HPCupsFilter.cpp 486: m_Job initialization failed with error = 48.
D [06/Aug/2015:16:48:52 -0400] [Job 28] prnt/backend/hp.c 919: ERROR: null print job total=0

###################################################

Downgrading to hplip-3.15.6 and corresponding plugin "fixes" the issue and printing is again possible.