Thanks. Everything you stated below including your assumptions are exactly correct. I did not kill the Beetlepig and hence could not proceed further. Thank you again.
Spoilers to the game are below
I'm sorry that you're having trouble with a puzzle in the Fran Bow game. I'm not totally sure whether you actually have the feather in your inventory already or not. Since you said that you are at "the point of having to select the feather to wake up the ant", to me, this means you already have the feather in your inventory. So, is the problem you are having, that when you try to USE the feather in your inventory with Antonio, the Ant, that you receive the response "I don't want to disturb him right now" or is it that you are unable to select and USE the feather in your inventory at all? Or is the problem that you still haven't picked up the feather yet (the feather is NOT in your inventory yet and you cannot find it)?
There was a "bug" involving the feather for Chapter 2, Part I that was fixed soon after the game was originally released and this bug was reported as fixed in the game's changelog in a forum post here dated 10/1/2015 which I believe is the post that you said you saw regarding this issue. So I don't know if you found a new bug or if it's possible that you just haven't done what is necessary to solve the puzzle in the game yet.
Anyway, here's some things to consider that may help me to figure out if it's a bug, or if you just need to do additional things to solve the puzzle. If you have the feather and when you select it from your inventory and USE it on Antonio the Ant, you get the response "I don't want to disturb him right now."
You need to do something else before you can wake Antonio the ant up.
Do you remember what Antonio said when you talked to him before he fell asleep?
Have you tried clicking on the Beetlepig? If you do, Fran will remind you about what you must do.
Antonio the Ant says something about your cat, Mr. Midnight being eaten, chewed, and swallowed by the Beetlepig.
And you must kill the Beetlepig to rescue Mr. Midnight from the Beetlepig.
Do you know how to kill the Beetlepig?
Selecting and USEing the ax on the Beetlepig will advance the story.
Have you tried to do that yet?
I'm guessing not, because otherwise selecting and USEing the feather on Antonio the Ant should work for you.
After you first try to kill the Beetlepig with the Ax, you will not be successful. But you will now be able to USE the feather on Antonio, the Ant, and proceed further into the story. If you don't have the feather in your inventory yet
Have you gone one screen left of where Antonio the Ant is?
Do you see anything in that screen that might be useful?
Pick up the ax
Have you tried taking your red pills on this screen?
See anything you might do while taking the pills?
Have you tried using the Ax on anything you see in this screen while taking the pills?
Use the ax on the well.
Does anything new appear for you to interact with?
Pick up the feather that dropped to the ground when the owl flew away.
Now the feather is in your inventory.
Click on the red pills again to return to reality.
If neither of these "solutions" help you to resume gameplay and solve the puzzle, please post again to let me know. If there is some other glitch preventing you from doing something mentioned in the hints above, it would be very helpful to have a copy of your save game file. This file is called "savedata.ini" and on Windows computers it is located here:
c:\users\<Your Windows Login Name>\appdata\Roaming\Fran_Bow\savedata.ini
If you would please upload that file to your favorite cloud service (such as dropbox, Google Drive etc.) and post a link to that file in your new post, I can take a look at it and see if I can suggest a further step to take to solve the puzzle, or fix the file so that you can proceed in the game.
Just for your information, I am NOT the developer of the Fran Bow game, but I work with the developers at Killmonday Games and serve as their representative on this GOG forum. I'm sure that if the hints above don't work for you, I can figure out a solution to help you to proceed in the Fran Bow game when you post again with your save game file.
Thanks for your purchase of the Fran Bow game, a0chptes, and I'm sorry for your inconvenience.