Occasionally I face the same problem with some tablets I use. My solution is to open the 'apk installer' application from their menu and manually choose the uploaded by b4abridge apk package to install.
Hi mc73,PFlores81
Thank you for answers again and again.
I had used Android 2.3.3 ,can use apk installer because it has channel for flash drive.But now I must use Android 2.2 which is older than,and doesn't have the channel for flash drive.I must use B4A-Bridge installation. Don't worry,I plan buy new one,Samsung or Acer about 12900-15900 Thai Baht.
p.s. Both of devices made in China ,very cheap
Best Regards
Theera