Problem installing 3.2.08 via AppImage on Linux MINT 17.3

[cats-meow]

the installation of CyptoCat 3.3.08 AppImage in Linux MINT 17.3 creates a desktop icon.

this desktop cryptocat icon / launcher has properties:

/tmp/.mount_WbAhIU/usr/bin/cryptocat
it seems strange that a launcher would use the /tmp directory

and appears as desktop configuration file (application/x-desktop) with 262 bytes

If I try launching this, it gives the error msg: there was an error launching the application

I can not find a way to launch CryptoCat 3.2.08 nor can I find if and where CryptoCat has been installed.

[probonopd]

Every time an AppImage is run, it is mounted to a (changing) temporary location in /tmp/.mount_xxxxxx. So your launcher should have the AppImage as the value of its Exec= key, not the temporary mount location.

What do you mean by "the installation"?

[cats-meow]

This is the first time I use an AppImage, so learning what it is? It seems to be a portable executable program. I copied it to /home/me/.CryptoCat_3.2.08 and put a launcher in the upper panel with path as /home/me/.CryptoCat_3.2.08/CryptocatAppImage. This functions OK, but it was not intuitive to me and without your help I would have been lost. The purpose of the AppImage was to make things easier and automatic, but this is not my experience. CryptoCat could not be launched in the main menu under Internet, nor by creating a desktop short-cut. The AppImage needs some fixing and refining.

[cats-meow]

Another 2 questions are

where does the AppImage store my private keys and my partners' public keys?
For example, I may wish to use CryptoCat on an external Linux-bootable HDD drive or live USB stick and use the same keys. How do I move from one computer to another or from one live USB to another and still be able to communicate with my roster partners?

How does the AppImage know where my public and private keys from CryptoCat v 3.2.07 are stored?

[probonopd]

@cats-meow you can launch an AppImage by just double-clicking it, after having made it executable.

If you want to have it put into the menu automatically, check the optional appimaged daemon.

See http://appimage.org/ for more information on AppImage.

[probonopd]

where does the AppImage store my private keys and my partners' public keys?

"The AppImage" doesn't. Cryptocat, the software inside the AppImage, does (and I don't know what it does, you would have to ask its developer).

AppImage is just a self-mounting filesystem image that executes whatever payload application is inside it.

For example, I may wish to use CryptoCat on an external Linux-bootable HDD drive or live USB stick and use the same keys. How do I move from one computer to another or from one live USB to another and still be able to communicate with my roster partners?

Probably you'd need to move the keys along. Again, not something AppImage interferes with.

How does the AppImage know where my public and private keys from CryptoCat v 3.2.07 are stored?

AppImage doesn't. Cryptocat does.