Yes, that's what I see in Windows.  The crash dialog says

Exception thrown at 0x00007FFE0355E2B4 (Qt6Widgets.dll) in jqt.exe: 0xC0000005: Access violation writing location 0x0000000000000028.

That's not something I know how to fix.

Henry Rich


On 10/20/2022 11:32 AM, bill lam wrote:
I can reproduce the crash. I think this is not a bug in the plot addon per
se but a change in behavior after migration to Qt 6.
It cannot display any dialog box during paint event but an J error happened
|length error: frames 3 and 4 are not conformable: pdf_text
|   pos=.pos    -"1(-:len),.0

It crashed when trying display this error in a dialog box.

On Thu, Oct 20, 2022 at 11:17 PM Pablo Landherr <pablo.landh...@gmail.com>
wrote:

Here is an even simpler case

'xlabel a b c d' plot 4 5 6

On Thu, Oct 20, 2022 at 5:14 PM Pablo Landherr <pablo.landh...@gmail.com>
wrote:

Here is an example

$Fcat,.' '

161 38

('xlabel ',,Fcat,.' ') plot ?161#100

(j terminates)


Fcat is a text matrix. If you need it, I can send it as well.



On Thu, Oct 20, 2022 at 5:02 PM Henry Rich <henryhr...@gmail.com> wrote:

If you can give me a way to recreate the error, I will fix it.

Henry Rich

On 10/20/2022 9:24 AM, Pablo Landherr wrote:
Since I upgraded to 904, I've noticed that J will terminate
immediately
if
I send incorrect parameters or data to the plot function. That never
happened before. Plot would signal an error and I would try to
understand
my mistake. Now, J quits in a blink of an eye and all unsaved work is
lost.
What can I do to avoid this? Not making errors in the use of plot is
not an
option. ;-)

I enclose (part of) the latest error report in case it helps.

Kind regards,
Pablo Landherr

-------------------------------------
Translated Report (Full Report Below)
-------------------------------------

Process:               jqt [2110]
Path:                  /Applications/j903/*/jqt
Identifier:            jqt
Version:               ???
Code Type:             X86-64 (Native)
Parent Process:        Exited process [2107]
User ID:               501

Date/Time:             2022-10-20 15:16:16.6442 +0200
OS Version:            macOS 12.6 (21G115)
Report Version:        12
Bridge OS Version:     6.6 (19P6067)
Anonymous UUID:        2EC0EE9F-F768-EE9F-E97B-30A341BA8F4E

Sleep/Wake UUID:       FF9375E4-3877-498F-AE99-D49E0DB9EE0C

Time Awake Since Boot: 930000 seconds
Time Since Wake:       170144 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_INSTRUCTION (SIGILL)
Exception Codes:       0x0000000000000001, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Termination Reason:    Namespace SIGNAL, Code 4 Illegal instruction: 4
Terminating Process:   exc handler [2110]
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