Hi Bruno,
(Solved)
I have a problem like already discussed. I have error/warning messages while uploading images and while doing import/export of MIGX options. I'll describe what I did in details now. Version numbers are modx-2-2-8 and MIGX-2.5.2.
My goal is to install an image gallery using MIGX as described in
http://rtfm.modx.com/display/ADDON/MIGX.Use+resource-specific+media+source+and+multifile-uploader . At first I created a simple test TV-parameter as described in
http://rtfm.modx.com/display/ADDON/MIGX.Backend-Usage and it worked without any problems or warnings. I could input images and output the images in webpages without any error messages.
Then I tried to use "dynamic resource-specific media source" because it allows to upload several images at once. I did everything as described in the manual step by step.
1)I created the dynamic resource-specific media source - ok
2)Then I created and tuned the MIGX - TV parameter - ok
3)Then I created the Configuration for the MIGX-TV? steps 1-4 - ok. While choosing "Export/Import" on step 5 I received multiple warning messages
Warning: Invalid argument supplied for foreach() in .... /core/components/migx/model/migx/migx.class.php on line 1746:
As far as I can understand the number of messages equals to the number of json-nodes in the window. In spite of the messages the json model was created successfully.
4) Then I bound a template to the TV parameter and got it on resource page -ok
5) I tried to upload a series on images. After pressing the button "Upload files" under the "resourcealbum" TV-parameter I got the following:
You can see 2 kinds of messages: a warning in the upper part of the screen (appeared at once after I pressed the button)
Missing argument 2 for Migx:renderChunk(), called in /.../core/components/migx/processors/mgr/default/migxiframe.php on line 13 and defined in /.../core/components/migx/model/migx/migx.class.php on line 938
and error message "increase post_max_size..." which appeared after I chose the image and pressed Upload. The file could *not* been uploaded. The parameters "post_max_size" and "upload_max_size" in the php.ini are equal to 32M, so the error message seems to be not adequate. I tried to make "setup" of MIGX parameter as described in the manual
http://rtfm.modx.com/display/ADDON/MIGXdb.Configuration , tried several times to reinstall MIGX module, including dropping its tables clearing modx cache etc etc, nothing helped.
Then in despair

I made a mirror installation (a total copy) of my website on another hosting. I copied all the files from htdocs dir and transfered all the mysql modx database having edited only host-specific parameters , i.e. logins, passwords,paths. (The php version on the first hosting is php5.4 while on the second it is php5.2). The mirror gave *no* errors or warnings and *everything* went smoothly without problems! So, I deduced that the problem is not associated with MIGX/MODX tuning but rather with environment (Apache,php).
Oh! While I wrote this message the IT-support installed Imagick, Ioncube, apc, exif, cconv, ftp and ctype and the error messages disappeared. Cannot tell exactly which of installed modules helped but it works now!

Maybe my post will help somebody...
[ed. note: adrachev last edited this post 13 years, 2 months ago.]