Installing pow on Yosemite fails silently at `launchctl bootstrap`

[mitio]

Running the installer on OS X Yosemite 10.10 fails silently at the *** Starting the Pow server... step.

Error

Running the install script via sh -x (curl get.pow.cx | sh -x) reveals that the actual command which fails is the following:

launchctl bootstrap gui/501 /Users/dimitardimitrov/Library/LaunchAgents/cx.pow.powd.plist

The command fails with an exit status of 133. When I run it manually, I get the following output:

/Users/dimitardimitrov/Library/LaunchAgents/cx.pow.powd.plist: Operation already in progress

Port forwarding does not work after that.

Workaround

Restarting the machine activated the port forwarding and now Pow works. However, running the installer again after the restart still produces the same error.

Environment

• I'm upgrading Pow from 0.4.3 to 0.5.0 using the installer script.
• OS is 10.10 Yosemite, upgraded from Mavericks.
• I'm using zsh and rbenv.
• Regular Terminal app, no tmux or iTerm.

Install debug output

Here's an excerpt from running the installer with sh -x (here is the full log as well):

➜  ~  sh -x pow.sh      
+ set -e
+ POW_ROOT='/Users/dimitardimitrov/Library/Application Support/Pow'
+ NODE_BIN='/Users/dimitardimitrov/Library/Application Support/Pow/Current/bin/node'
+ POW_BIN='/Users/dimitardimitrov/Library/Application Support/Pow/Current/bin/pow'
+ LATEST_VERSION=0.5.0
(...snip...)
+ NEEDS_ROOT=0
+ '[' 0 -eq 1 ']'
+ echo '*** Starting the Pow server...'
*** Starting the Pow server...
+ '[' 10 -ge 10 ']'
+ launchctl bootstrap gui/501 /Users/dimitardimitrov/Library/LaunchAgents/cx.pow.powd.plist
➜  ~  echo $?
133
➜  ~  launchctl bootstrap gui/501 /Users/dimitardimitrov/Library/LaunchAgents/cx.pow.powd.plist
/Users/dimitardimitrov/Library/LaunchAgents/cx.pow.powd.plist: Operation already in progress
➜  ~  echo $?
133
➜  ~

[Kriechi]

tmux, iterm or such things running?

[mitio]

No, just regular Terminal app. I saw the tmux issues. I'll update the description.

[vit-lebediev]

Any progress/update on this? I've encountered this same issue, with the difference that running launchctl bootstrap gui/0 /Users/user/Library/LaunchAgents/cx.pow.powd.plist outputs "Could not find domain for"

Environment

Suddenly pow stopped working. Trying to install v0.5.0 using the installer script.
OS is 10.11.3 El Capitan
I'm using bash and rvm.
Tried in both iTerm and regular terminal