I have installed J, in fact in two ways, one by following the official instructions in their guide. However, that resulted in error messages as I detail in this question: Installing JQt IDE for the J language, getting error
I have now also installed J using the instructions in the answer here: https://askubuntu.com/questions/705338/install-j-on-ubuntu
And this works. But when I run jqt
I get the errors
void DBusMenuExporterPrivate::addAction(QAction*, int): Already tracking action "&Test" under id 50
void DBusMenuExporterPrivate::addAction(QAction*, int): Already tracking action "&Clipboard" under id 48
void DBusMenuExporterPrivate::addAction(QAction*, int): Already tracking action "Run &Project" under id 51
void DBusMenuExporterPrivate::addAction(QAction*, int): Already tracking action "&Vocabulary" under id 60
void DBusMenuExporterPrivate::addAction(QAction*, int): Already tracking action "&NuVoc" under id 63
void DBusMenuExporterPrivate::addAction(QAction*, int): Already tracking action "&Context Sensitive" under id 61
void DBusMenuExporterPrivate::addAction(QAction*, int): Already tracking action "&NuVoc Context Sensitive" under id 64
and a window pops up with the error message
|file name error
| 0!:0 y
If I navigate to ~/j64-803
and run bash jqt.sh
I get the same error messages in the terminal but the window that pops up has no errors.
I don't recall seeing that error message before or your earlier posts to the J forum, but in any case it looks like you are trying to install j803, whereas it would be better to install the current version, j805.
See instructions at code.jsoftware.com/wiki/System/Installation.
If you still have problems, please use the J forums, see code.jsoftware.com/wiki/System/Forums.