I want to install Redshift and Arnold same time. I receive this message

"Cannot determine preloaded icons for shelf: <hou.Shelf ‘arnold’> OR
Cannot determine preloaded icons for shelf: <hou.Shelf ‘redshift’>

and my houdini.env file is

#
# Houdini Environment Settings
#
# The contents of this file are read into the environment
# at startup. They will override any existing entries in
# the environment.
#
# The syntax is one entry per line as follows:
# VAR = VALUE
#
# Values may be quoted
# VAR = “VALUE”
#
# Values may be empty
# VAR =
#

# Example:
#
# HOUDINI_NO_SPLASH = 1


# htoa config start
PATH = “$PATH;CUsers/user.name/htoa/htoa-2.1.3_rcca6014_houdini-16.0.671/htoa-2.1.3_rcca6014_houdini-${HOUDINI_VERSION}/scripts/bin”
HOUDINI_PATH = “CUsers/user.name/htoa/htoa-2.1.3_rcca6014_houdini-16.0.671/htoa-2.1.3_rcca6014_houdini-${HOUDINI_VERSION};&”

PATH = “CProgramData/Redshift/bin;$PATH”
HOUDINI_PATH = “CProgramData/Redshift/Plugins/Houdini/16.0.671;&”
# htoa config end

I think somethings are wrong with the .env file.

The second line of HOUDINI_PATH is replacing the first, set for htoa. You need to concatenate them for both plugins to be loaded. Your htoa path is also relative to your $HOUDINI_VERSION, if you are not running the exact version of houdini indicated by this path, then it won't load at all. You can safely change that to be hard coded to the version you have installed, as htoa usually works with houdini versions that are later than the build version.

For example I have in my houdini.env:

Thank you very much Jsmack. I solved my issue with your method.

Hello guys it wont work for the Houdini 16.5.268 can you help please ?

Awesome, thanks for this solution.
I ran into a similar issue with configuring V-Ray for Houdini and Redshift. Now both are working, i used this in my houdini.env file:

#
# Houdini Environment Settings
#

# deadline config begin
DEADLINE_ROOT = “C:\ProgramData\Thinkbox\Deadline10”
HOUDINI_PATH = “$HOUDINI_PATH;CUsers/xxxx_username/AppData/Local/Thinkbox/Deadline10/submitters/HoudiniSubmitter;&”
HOUDINI_MENU_PATH = “$HOUDINI_MENU_PATH;CUsers/xxxx_username/AppData/Local/Thinkbox/Deadline10/submitters/HoudiniSubmitter;&”
# deadline config end


# redshift config begin
REDSHIFT_ROOT = “CProgramData/Redshift”
REDSHIFT_HOUDINI_ROOT = “${REDSHIFT_ROOT}/Plugins/Houdini/17.5.293”
PATH = “$PATH;${REDSHIFT_ROOT}/bin”
# redshift config end


# V-Ray for Houdini Begin
#
VFH_ROOT=“C:\Users\xxxx_username\Documents\houdini17.5\vray_adv_41203_houdini17.5.293”

VRAY_APPSDK=“${VFH_ROOT}/appsdk”
VRAY_OSL_PATH=“${VRAY_APPSDK}/bin”
VRAY_UI_DS_PATH=“${VFH_ROOT}/ui”
VFH_HOME=“${VFH_ROOT}/vfh_home”
VFH_PATH=“${VFH_HOME}/bin;${VRAY_APPSDK}/bin”

PATH=“${VFH_PATH};${PATH}”
HOUDINI_PATH=“${VFH_HOME};${HOUDINI_PATH};&”

HOUDINI13_VOLUME_COMPATIBILITY=1
HDF5_DISABLE_VERSION_CHECK=1
#
# V-Ray for Houdini End

HOUDINI_PATH = “${VFH_ROOT};${HOUDINI_PATH};${REDSHIFT_HOUDINI_ROOT};&”


It's important to append V-ray contents to the end of your houdini.env

Hi, have you heard about packages? Makes env-ing obsolete…
https://www.sidefx.com/docs/houdini/ref/plugins.html [www.sidefx.com]

Instead of a link slap how about a sample json file @xilofoton?

How about an app that does that for you?

https://vimeo.com/361638185 [vimeo.com]

Hi
I use Houdini 17.5.455 with Arnold 5 on CentOS 7.5. there is a problem: Arnold is not there (in Houdini) to use it.
I guess the problem is in the Houdini.env file.

# at startup. They will override any existing entries in
# the environment.
#
# The syntax is one entry per line as follows:
# VAR = VALUE
#
# Values may be quoted
# VAR = “VALUE”
#
# Values may be empty
# VAR =
#

# Example:
#
# HOUDINI_NO_SPLASH = 1

# htoa config start
export HOUDINI_PATH = “/home/workstationfx/htoa/htoa-5.0.0_rcd870fd_houdini-17.5.425/htoa-5.0.0_rcd870fd_houdini-${HOUDINI_VERSION};&”
export PXR_PLUGINPATH_NAME = “/home/workstationfx/htoa/htoa-5.0.0_rcd870fd_houdini-17.5.425/htoa-5.0.0_rcd870fd_houdini-${HOUDINI_VERSION}/hydra”
# htoa config end
Dose anyone know what is the solution?