error message - sortof

I sudddenly started getting the below message. Not an error but had an "!" before it. No clue what it's all about except that I put in a character that has blendshapes in his animation so maybe that's it but what is the reference to AssetStore all about ? do they mean the unity asset store are does "store" mean something more like "save"?

owser.InitSearchMenu () [0x00014] in C:\buildslave\unity\build\Editor\Mono\ProjectBrowser.cs:460 at UnityEditor.ProjectBrowser.AssetStoreSearchEndedCallback () [0x00000] in C:\buildslave\unity\build\Editor\Mono\ProjectBrowser.cs:488 at UnityEditor.ObjectListArea+c_AnonStorey11.m1B (UnityEditor.AssetStoreSearchResults results) [0x00356] in C:\buildslave\unity\build\Editor\Mono\ObjectListArea.cs:407 at UnityEditor.AssetStoreResultBase`1[Derived].Parse (UnityEditor.AssetStoreResponse response) [0x000fc] in C:\buildslave\unity\build\Editor\Mono\AssetStore\AssetStoreClient.cs:89 at UnityEditor.AssetStoreClient+cAnonStorey2F.m55 (UnityEditor.AssetStoreResponse ar) [0x00000] in C:\buildslave\unity\build\Editor\Mono\AssetStore\AssetStoreClient.cs:751 at UnityEditor.AssetStoreClient+cAnonStorey2E.m_53 (UnityEditor.AsyncHTTPClient job) [0x00012] in C:\buildslave\unity\build\Editor\Mono\AssetStore\AssetStoreClient.cs:624 UnityEditor.AsyncHTTPClient:Done(State, Int32)