Necessary files are missing for block CH_AI

when I complie my PCS7program , there iserror coming,
E: Necessary files are missing for block CH_AI. Please note that you have to install exactly the same version of the library as the one this block was imported from.

but my library have the same version of CH_AI block i.e. CHN71 , the errors are attached herewith.

BUT

the program is compiling in other PC. The installed sofware in that other also PC is attached here with.

any experts can help me here?

cheers
sunny77

These are the problems I experienced with PCS7 V8.0:

>> CH_DI, CH_AI, CH_DO, CH_AO won't work when creating a new project/multiproject CFC.

>> Retrieved multiprojects containing these block types might work initially, (compiles and downloads without issue) but then after modifying the chart logic or by adding/removing charts, the error returns.

>> Specifically, the error is 'Generate Module Driver Function Found 1 Error'

Reason:

>> PCS7 V8.0 has an the automatic installation suite, but this suite doesn't install PCS7 V7.1 libraries automatically, nor can it be selected from the installation list. CH_DI, CH_AI, CH_DO and CH_AO come from V7.1 libraries (it will be listed as PCS 7 Library 7.1 in the CFC libraries after being properly installed).

Solution:

>> Insert the PCS7 V8.0 DVD 2

>> Search for "V7" without quotes

>> You'll find folders like, PCS7BASISLIBRARY_V7.1+SP3+UP8, PCS7LIBRARY_7.1+SP1+UPD1, PCS7ADVLIBRARY_V7.1+SP5+UPD4, etc.

>> I suggest you install them all, especially the PCS7LIBRARY_7.1+SP1+UP1,

>> Problem solved.

:p ....man, I struggled with this problem for 1 whole week... and I'll be teaching PCS7 basics 2 days from now lol. I hope it helps. I'll edit this if any details are unclear.

Just in case someone lands on this topic and still can't figure out a solution, as the OP is not giving feedback as to his solution. 

First search in libraries for CH_AI or CH_DI, whatever driver block you are having problems with. Note in what version of the library you find it, and what version of the library the "Block Driver Setting" allows you to select for compilation. That would be your clue if you have the right library installed for compilation.

Secondly, later versions of PCS7 uses the channel driver blocks PCS7AnIn, PCS7AnOu, PCS7DiIn etc. So dump the CH_AI block for the PCS7AnIn block. Problem solved.