[Why is input not showing up in this context?]

I tried your script this way:
 

-	script	wisp	-1,{
OnWhisperGlobal:
	if(getgmlevel() > 50){
  
		.@loop1 = 1;
		while(.@loop1){
	
			mes "Choose an option";
			next;
				switch(select("Option1:Option2:Option3")) {
				case 1:
				mes "Write a number between 0 and 6.";
				while(1){
					input .@TdayofWeek;		//Script stops working right here. Input doesn't show up.
					if ((.@TdayofWeek >= 0) && (.@TdayofWeek <= 6))
						break;
				}
				setarray .@dayofWeek[getarraysize(.@dayofWeek)], .@TdayofWeek;
				break;
			
				case 2:
				//Nothing yet
				break;
			
				case 3:
				.@loop1 = 0;
				break;
			
			}
		}
		close;

	}
}

and couldn't reproduce. It worked right.
This test was made with the latest git commit. What version are you using?
A weird issue indeed.

[Old Asura Animation/Src Code]

Nice.
To anyone else who wants to implement it, I had a mistake; it's skill.c, not battle.c

[Old Asura Animation/Src Code]

I did a mix with previous changes. It's not a good code, but it works.
http://pastebin.com/raw/7MTcs3c2

[MVP Shop Rotational]

Can you test this? http://pastebin.com/raw/1dLQBxcM
Took the .@nb part from here: 

Credits to her.

[Item distribution...]

I made this function a long time ago.

	// callfunc "party_randomattach",party,required map to be in;
function    script    party_randomattach    {
    .@party = getarg(0,getcharid(1));
    .@map$ = getarg(1,""); 
    if(.@party){
        getpartymember(.@party,1,.@party_cid);
        getpartymember(.@party,2,.@party_aid);
        .@n = $@partymembercount;
        for(;.@i<.@n;.@i++){
            if(isloggedin(.@party_aid[.@i],.@party_cid[.@i])){
                attachrid(.@party_aid[.@i]);
                if(.@map$!=""&&.@map$!=strcharinfo(3))
                    deletearray(.@party_aid[.@i],1);
            }else
                deletearray(.@party_aid[.@i],1);
        }
        attachrid(.@party_aid[rand(getarraysize(.@party_aid))]);
    }
    return;
}
// callfunc "party_randomattach",.@party_id,"payon"; getitem 512,5;
// callfunc "party_randomattach",getcharid(1),strcharinfo(3); getitem 513,5;
// callfunc "party_randomattach"; getitem 512,5;
	

[GRF: GRF Editor]

This is what happens when I try to use GrfCL -help

Does anybody else have this same issue?

[Sacrifice Never Miss]

Really weird. The first change would have work, the second one is a bit more extreme. Did you recompile? Sorry if that's sound like asking you a novice question, but I don't really know what else happens then.

[OnPCLoginEvent doesn't work]

Does your map console shows up a MAX_EVENTQUEUE warning? Or else, make sure you have loaded the script right. Try to put it inside another working script and tell me what happens.

[Payable Event]

Is this what you're looking for?
http://pastebin.com/raw/6tWpCZdb

[Sacrifice Never Miss]

battle.c

Change:

    if (skill_id == PA_PRESSURE || skill_id == HW_GRAVITATION)
        return damage; //These skills bypass everything else.

To:

    if (skill_id == PA_PRESSURE || skill_id == HW_GRAVITATION || skill_id == PA_SACRIFICE)
        return damage; //These skills bypass everything else.

[About quest shop script...]

Check this line:
setarray .Shops$[1],"Headgears","Weapons","Other";
Be sure it has, at least, 2 entries.

[Soul Link effects.]

Did you change the script name?

[About quest shop script...]

Is it a modified version of Euphy's quest shop or the original?

[Soul Link effects.]

use TiMz script and change the item to
20580,Spirit_of_Hunter,Spirit of Hunter,2,2,,10,,,,,0x00000800,7,2,,,,,,{ skilleffect "SL_HUNTER",0; sc_start4 SC_SPIRIT,350000,5,460,0,0; doevent "sample_soullink_hp::OnPCStatCalcEvent";},{},{}