# Strange error message with mousePressed() -- Processing 4.0b8, macOS 11.4

**URL:** https://discourse.processing.org/t/strange-error-message-with-mousepressed-processing-4-0b8-macos-11-4/38984
**Category:** Processing
**Created:** [September 26, 2022, 6:59pm UTC](https://discourse.processing.org/t/strange-error-message-with-mousepressed-processing-4-0b8-macos-11-4/38984 "2022-09-26T18:59:39Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![sophist42](https://avatars.discourse-cdn.com/v4/letter/s/59ef9b/32.png) [@sophist42](https://discourse.processing.org/u/sophist42)
#### Post date: [September 26, 2022, 6:59pm UTC](https://discourse.processing.org/t/strange-error-message-with-mousepressed-processing-4-0b8-macos-11-4/38984/1 "2022-09-26T18:59:39Z")

</div>

Sorry if this question has already been asked – my programs are working just fine but I get a strange error message like this every time I try to press the mouse button in my sketch window. Currently running Processing 4.0b8 on a Mac running macOS 11.4, chip Apple M1:

```auto
2022-09-26 14:48:24.605 java[54315:900278] (
	4 AppKit 0x0000000183d5a174 CopyElementAtPosition + 172
	5 HIServices 0x000000018638456c _AXXMIGCopyElementAtPosition + 432
	6 HIServices 0x00000001863a681c _XCopyElementAtPosition + 336
	7 HIServices 0x0000000186363354 mshMIGPerform + 200
	8 CoreFoundation 0x0000000181147368 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 60
	9 CoreFoundation 0x0000000181147224 __CFRunLoopDoSource1 + 596
	10 CoreFoundation 0x00000001811456a4 __CFRunLoopRun + 2372
	11 CoreFoundation 0x00000001811445e8 CFRunLoopRunSpecific + 600
	12 HIToolbox 0x000000018905f2a0 RunCurrentEventLoopInMode + 292
	13 HIToolbox 0x000000018905f014 ReceiveNextEventCommon + 552
	14 HIToolbox 0x000000018905edd4 _BlockUntilNextEventMatchingListInModeWithFilter + 72
	15 AppKit 0x0000000183933480 _DPSNextEvent + 836
	16 AppKit 0x0000000183931e20 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1292
	17 libosxapp.dylib 0x0000000102f70220 -[NSApplicationAWT nextEventMatchingMask:untilDate:inMode:dequeue:] + 144
	18 AppKit 0x0000000183923cac -[NSApplication run] + 596
	19 libosxapp.dylib 0x0000000102f6ffd8 +[NSApplicationAWT runAWTLoopWithApp:] + 208
	20 libawt_lwawt.dylib 0x0000000102eb4674 +[AWTStarter starter:headless:] + 488
	21 libosxapp.dylib 0x0000000102f71c50 +[ThreadUtilities invokeBlockCopy:] + 28
	22 Foundation 0x0000000181f0d538 __NSThreadPerformPerform + 188
	23 CoreFoundation 0x0000000181146ad4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28
	24 CoreFoundation 0x0000000181146a20 __CFRunLoopDoSource0 + 208
	25 CoreFoundation 0x000000018114670c __CFRunLoopDoSources0 + 268
	26 CoreFoundation 0x0000000181145094 __CFRunLoopRun + 820
	27 CoreFoundation 0x00000001811445e8 CFRunLoopRunSpecific + 600
	28 libjli.dylib 0x0000000102822fec CreateExecutionEnvironment + 400
	29 libjli.dylib 0x000000010281f1fc JLI_Launch + 1184
	30 java 0x00000001027f7bb0 main + 408
	31 libdyld.dylib 0x0000000181065450 start + 4
)

```

Like I said, the message is more annoying than debilitating, but is there anything I can do to my install to make it go away? I’ve tried searching the forum but it seems most of the other posts have to do with errors that prevent a program from running properly.

Thanks!  
Roger