Android Question SDK Manager - which APIs and which Tools to load?

[Gerrard]

I have a device with Android V4.1.2, and a device with Android V2.3.3. What versions in SDK Manager do I need to load? Presumably SDK Tools Rev 25.1.7 and SDK Platform-tools Rev 24.0.1, as theyare the latest. These I have done. I also loaded SDK Build-tools Rev 24.0.1.
Why are the earlier revisions still on the list?

I have also loaded Android 4.1.2(API 16), and Android 2.3.3 (API API 10), because of my devices.

The reason that I ask is because since loading the latest Revisions of SDK Tools 25.1.7, SDK Platform-tools 24.0.1 & SDK Build-tools 24.0.1, I get the following error at compile time, even on apps that have compiled successfully before I loaded the latest Revisions. The error message is:

adb.exe - Entry Point Not Found
The procedure entry point WSAPoll could not be located in the dynamic link library WS2_32.dll.

 

[DonManfred]

Why are the earlier revisions still on the list?

because you downloaded them in the past. You can deinstall this old versions...

For the rest it sounds like your SDK ^(or B4A installation) is kind of broken. Try to reinstall it.