Is it still the ""Cannot read properties of
undefined (reading 'getThumbAsync')"" error?

Based on the code snippet above it looks that it happened while you were looking up image for the particular (auto-)playlist?
Anyhow try with the latest debug version : https://www.mediamonkey.com/beta/MediaMonkey_5.1.0.2829_Debug.exe
and submit the crash report and write the log ID here (or ideally in eSupport ticket)

Thanks!

In that case, please capture these crashes in a debug log (step 4b) and attach the debug log to a Support Ticket: https://www.mediamonkey.com/forum/viewtopic.php?t=86643

This will help a developer analyze why this happens on your setup.

sorry took a while to get back, i updated to the version you provided but i still get the error.
usually it happens when i try to edit my autoplaylists.

Please try the latest [url=https://www.mediamonkey.com/forum/viewtopic.php?t=86639&sd=d]MediaMonkey 5.1 beta[/url] and see if this works better for you.

Hi, thanks for getting back to me.

This is with 5.0.4.2693

Which Build (Help > About) are you seeing this with?

Application throw an exception "Cannot read properties of
undefined (reading 'getThumbAsync')"

TypeError: Cannot read properties of undefined (reading
'getThumbAsync')
at PlaylistHeader ._ assignlmage
(file:///controls/playlistHeader.js:245:42)
at eval (file:///controls/playlistHeader.js:144:31)
at eval (file:///helpers/searchTools.js:515:21)
at line 245 !!

Source code:
241.
242.    _assignlmage: function 0 {
243.    var pixelSize =
parselnt(this.imageSquare.offsetWidth);
244.    this.imageSquare.controlClass.hidelmage0;
245.    var cancelToken =
this ._ playlist.getThumbAsync(pixelSize, pixelSize, function
(imageData) {
246.    if (!this ._ cleanUpCalled) {
247.    if (imageData != ")
248.
this.imageSquare.controlClass.showlmage(imageData);
249.    }
250.    }.bind(this));

Callstack: Script: file:///mminit.js ; Func: window.myAlert ; Row:
304 ; Col: 17
Script: file:///mminit.js ; Func: window.alertException ; Row: 314
; Col: 9
Script: file:///mminit.js ; Func: window.onerror ; Row: 284 ; Col:
13

Would you like to restart MediaMonkey in Safe mode?

so, i have quite lot of (auto) playlists, i think around 60, only 2 of them are regular playlists.

Besides loading extremly slow (which is annoying bit might not be helped) i run into crashes quite often where mediamonkey wants to be restarted.

I recently started setting images as playlist covers and one error that comes up quite often is:

(OCRed from the popup since i cant copy paste from there)
[code]
Application throw an exception "Cannot read properties of
undefined (reading 'getThumbAsync')"

TypeError: Cannot read properties of undefined (reading
'getThumbAsync')
at PlaylistHeader ._ assignlmage
(file:///controls/playlistHeader.js:245:42)
at eval (file:///controls/playlistHeader.js:144:31)
at eval (file:///helpers/searchTools.js:515:21)
at line 245 !!

Source code:
241.
242. _assignlmage: function 0 {
243. var pixelSize =
parselnt(this.imageSquare.offsetWidth);
244. this.imageSquare.controlClass.hidelmage0;
245. var cancelToken =
this ._ playlist.getThumbAsync(pixelSize, pixelSize, function
(imageData) {
246. if (!this ._ cleanUpCalled) {
247. if (imageData != ")
248.
this.imageSquare.controlClass.showlmage(imageData);
249. }
250. }.bind(this));

Callstack: Script: file:///mminit.js ; Func: window.myAlert ; Row:
304 ; Col: 17
Script: file:///mminit.js ; Func: window.alertException ; Row: 314
; Col: 9
Script: file:///mminit.js ; Func: window.onerror ; Row: 284 ; Col:
13

Would you like to restart MediaMonkey in Safe mode?
[/code]

Would be great if i knew whats triggering this and how i can stop it from happening.