@schymane wrote: I'm seeing very strange things with MassBank searching ... (records appearing many, many times; no default settings making it look like we have nothing in the library etc etc)

Look how many times we have (the same) records of nicotine, they repeat every second entry for a while ... same for benzotriazole

https://massbank.eu/MassBank/Result.jsp?compound=Nicotine&op1=and&mz=&tol=0.3&op2=and&formula=&type=quick&searchType=keyword&sortKey=not&sortAction=1&pageNo=1&exec=&inst_grp=ESI&inst=CE-ESI-TOF&inst=ESI-ITFT&inst=ESI-ITTOF&inst=ESI-QTOF&inst=ESI-TOF&inst=LC-ESI-IT&inst=LC-ESI-ITFT&inst=LC-ESI-ITTOF&inst=LC-ESI-Q&inst=LC-ESI-QFT&inst=LC-ESI-QIT&inst=LC-ESI-QQ&inst=LC-ESI-QTOF&inst=LC-ESI-TOF&inst_grp=Others&inst=APCI-ITFT&inst=APCI-ITTOF&inst=CI-B&inst=FAB-B&inst=FAB-BE&inst=FAB-EB&inst=FAB-EBEB&inst=FD-B&inst=FI-B&inst=LC-APCI-ITFT&inst=LC-APCI-Q&inst=LC-APCI-QTOF&inst=LC-APPI-QQ&inst=MALDI-QIT&inst=MALDI-TOF&inst=MALDI-TOFTOF&ms=MS2&ion=0

Summary:
-number of spectra incorrect
-same spectra appear multiple times
-ordering is broken