my button ok works fine
if u have problem with this try add manual in the b4a ini file
C:\Users\Douglas\AppData\Roaming\Anywhere Software\Basic4android\b4aV0.1.ini
in the lines
PlatformFolder=C:\Program Files (x86)\Android\android-sdk\platforms\android-19
ToolsFolder=C:\Program Files (x86)\Android\android-sdk\tools\
JavaBin=C:\Program Files (x86)\Java\jdk1.8.0\bin
note i m on pc work and this pc is x86 xD
my home pc is x64
try make this manual and tell me