Have you removed the old sources before you use the OPM (= Online Package Manager - you are right). The same with the first try of BGRA* and make a clean recompile of Lazarus !
What version of fpc/lazarus did you have ?
This version were installed/working by me without a problem
Lazarus 2.0.13 r64894M FPC 3.2.2 i386-win32-win32/win64
Lazarus 2.3.0 rv1.4.4-13496-g1d740fac9e / 65500 FPC 3.2.2 x86_64-win64-win32/win64 (yet tested, no problem)
Test:
Install with OPM (on a clean lazarus/fpc)
1 ) bgrabitmappack (Version 11.3.1.0 i have) out of the package BGRABitmap
2 ) pascalscada_dsgn and pascalscada_hmi (0.7.7.0) this will incluse pascalscada and pascalscada_common automatic
With this steps i have no problem and i do not use pascalscada_full and pascalscada_db here.