Interesting... mine is working ok. I have the item Solari as a full path here:
C:\Riot Games\League of Legends\RADS\projects\lol_air_client\releases\0.0. 0.126\deploy\assets\images\items\3190_Crest_of_the _iron_solari.png
They have since made releases 0.0.0.128 and 0.0.0.130 and NEITHER of those directories have the iron solari png.That seems a little strange to me. Could you look to see if you have the aforementioned item path?
The only thing I could think of is that Riot would have for some reason deleted that image, but if i had the Item Changer open while patching LOL, the delete might not have been able to process. I wouldnt expect them to delete the image file though, and they generally seem to have every image required in every release.
D:\games\League of Legends\RADS\projects\lol_air_client\releases\0.0. 0.129\deploy\assets\images\championScreens\abiliti es\3190_Crest_of_the_iron_solari.png
(yes, "championScreens\abilities" , not "items" )