First make sure you have the current version 1.74 of JBridge

https://jstuff.wordpress.com/jbridge/updates/


If it's AmpliTube 4, which is 64 bit only app, then yes you need JBridge but you do not need JBridge for AmplTube 3 which is a 32 only bit app.

Don't get me wrong you will want JBridge if you have ANY 64 bit plugins that you want to use with BIAB or RB.

I've found that JBridge works just fine with all my 64 bit plugins (AmpliTube 4, SampleTank 3, Kontatk (the 64 bit VST; Kontatk comes in both "flavors" and I have both 64 and 32 bit versions installed), UVI Workstation, Addictive Drums 2, and a bunch more

As FYI AmpliTube 4 installs TWO VST 3 items:

The first, and the one you want to point to from within BIAB or RB, is "Amplitube 4.dll" (usually in a default directory like "C:\Program Files\IK Multimedia\..." I customize where I place all VST files, both VST 2 and VST 3 so I forget where the default IK VST 3 .dll path is.


The second type file, and one YOU DO NOT WANT, is a VST3 file called "AmpliTube 4.vst3" in the C:\Program Files\Common Files\VST3\.." folder - it shouldn't work anyway and it will give a different kind of error indicating it is NOT a valid VST plugin and then crash JBridge auxhost as well as BIAB.

good luck
Larry

Win10Pro,i9,64GB,2TBSSD+20TBHDDs,1080TI,BIAB'24,Scarlett18i8,Montage7,Fusion 8HD,QS8,Integra7,XV5080,QSR,SC-8850,SPLAT,FL21&others,Komp.14,IK suite&others, just a guitar player-AXE FX III &FM9T, FishmanTP, MIDIGuitar2, GK2/3'sw/GI20