last exception interpretation

No attachment is here, and what's there doesn't give enough info to identify if a mod is the culprit or which one. Have you tested with no mods or CC and checked the list of Previously Broken mods and the most recent Broken/Updated Mods post? (from the patch before today)

sorry, it won'e let me upload the .txt file; here's the contents:

<?xml version="1.0" ?><root>
<BetterExceptions><BEversion>v3.13</BEversion><WasBlank>False</WasBlank><TuningLoadFinished>True</TuningLoadFinished><BadObjectCC>False</BadObjectCC><Advice>Not available. More info may be in BE Report.</Advice></BetterExceptions><report><version>2</version><sessionid>c5834997562501c7680ff5c0</sessionid><type>desync</type><sku>ea.maxis.sims4_64.15.pc</sku><createtime>2025-04-28 17:40:06</createtime><buildsignature>Local.Unknown.Unknown.1.113.297.1020-1.300.000.208.Release</buildsignature><categoryid>picker_interaction.py:2725</categoryid><desyncid>c5834997562501c7680ff5c0</desyncid><systemconfig/><screenshot/><desyncdata>Exception during call to test method on &lt;class 'sims4.tuning.instances.bookshelf_Spells_MagicTome_Read_Picker'&gt; (TypeError: 'NoneType' object is not iterable)&#13;&#10;Traceback (most recent call last):&#13;&#10;&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\interactions\base\picker_interaction.py", line 2725, in _get_objects_internal_gen&#13;&#10;TypeError: 'NoneType' object is not iterablertim=0&#13;&#10;Client Session Time: 239.45&#13; &#10;Num Save Errors: 0&#13; &#10;Num Load Errors: 0&#13; &#10;Current Game State: 0x96d01090&#13; &#10;LoadingScreenActiveFlag: 1&#13; &#10;Origin Version: 13,443,0,5956&#13; &#10;Modded: True&#13; &#10;SystemInfo: Windows 11 10.0.26100 GPU: NVIDIA GeForce RTX 3050 Ti Laptop GPU nvldumdx.dll 32.0.15.7602, GUID: D7B71E3E-66E0-11CF-2A6E-7E2A0EC2ED35&#13; &#10;</desyncdata></report>
<report><version>2</version><sessionid>c5834997562501c7680ff5c0</sessionid><type>desync</type><sku>ea.maxis.sims4_64.15.pc</sku><createtime>2025-04-28 17:40:07</createtime><buildsignature>Local.Unknown.Unknown.1.113.297.1020-1.300.000.208.Release</buildsignature><categoryid>picker_interaction.py:2725</categoryid><desyncid>c5834997562501c7680ff5c0</desyncid><systemconfig/><screenshot/><desyncdata>Exception during call to test method on &lt;class 'sims4.tuning.instances.bookshelf_Spells_MagicTome_Read_Picker'&gt; (TypeError: 'NoneType' object is not iterable)&#13;&#10;Traceback (most recent call last):&#13;&#10;&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\interactions\base\picker_interaction.py", line 2725, in _get_objects_internal_gen&#13;&#10;TypeError: 'NoneType' object is not iterablertim=0&#13;&#10;Client Session Time: 239.45&#13; &#10;Num Save Errors: 0&#13; &#10;Num Load Errors: 0&#13; &#10;Current Game State: 0x96d01090&#13; &#10;LoadingScreenActiveFlag: 1&#13; &#10;Origin Version: 13,443,0,5956&#13; &#10;Modded: True&#13; &#10;SystemInfo: Windows 11 10.0.26100 GPU: NVIDIA GeForce RTX 3050 Ti Laptop GPU nvldumdx.dll 32.0.15.7602, GUID: D7B71E3E-66E0-11CF-2A6E-7E2A0EC2ED35&#13; &#10;</desyncdata></report>
<report><version>2</version><sessionid>c5834997562501c7680ff5c0</sessionid><type>desync</type><sku>ea.maxis.sims4_64.15.pc</sku><createtime>2025-04-28 17:40:08</createtime><buildsignature>Local.Unknown.Unknown.1.113.297.1020-1.300.000.208.Release</buildsignature><categoryid>picker_interaction.py:2725</categoryid><desyncid>c5834997562501c7680ff5c0</desyncid><systemconfig/><screenshot/><desyncdata>Exception during call to test method on &lt;class 'sims4.tuning.instances.bookshelf_Spells_MagicTome_Read_Picker'&gt; (TypeError: 'NoneType' object is not iterable)&#13;&#10;Traceback (most recent call last):&#13;&#10;&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\interactions\base\picker_interaction.py", line 2725, in _get_objects_internal_gen&#13;&#10;TypeError: 'NoneType' object is not iterablertim=0&#13;&#10;Client Session Time: 239.45&#13; &#10;Num Save Errors: 0&#13; &#10;Num Load Errors: 0&#13; &#10;Current Game State: 0x96d01090&#13; &#10;LoadingScreenActiveFlag: 1&#13; &#10;Origin Version: 13,443,0,5956&#13; &#10;Modded: True&#13; &#10;SystemInfo: Windows 11 10.0.26100 GPU: NVIDIA GeForce RTX 3050 Ti Laptop GPU nvldumdx.dll 32.0.15.7602, GUID: D7B71E3E-66E0-11CF-2A6E-7E2A0EC2ED35&#13; &#10;</desyncdata></report>
</root>

I usually go through Scarlet's list of mods before adding new mods/updating game and my .ts4scripts are all up to date and/or removed, thus why i'm thinking its a .package file or tuning file.

will check the broken/updated mods list, thanks!