malloc: *** error for object 0xc0000003: Non-aligned pointer being freed

#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include "database.h"
 
int main(){
    
//hold value of how many records in storage
	int records;
	
	char numStr[MAX_NUMSTR] = "";
	
	//loop counter
	int count = 0;
	
	//retrieve now many records to add to the database
	printf("How many cd records do you have? You can enter in a max of 200 records ");
	fgets(numStr,sizeof(numStr), stdin);
	sscanf(numStr, "%d", &records);
	
	//array of cd records
	album *cd = malloc(records*(sizeof(cd)));
	
	if(cd == NULL){
		puts("Error: You do not have enough memory to run this program.");
		exit(1);
	}
 
	//store record information in the album array
	for(count = 0; count < records; count++){
		 readAlbum(&cd[count]);
	}
 
	for(count = 0; count < records; count++)
		print_cd(&cd[count]);
 
	//free memory that was allocated from strdup	
	for(count = 0; count < records; count++){
			free(cd[count].title);
			free(cd[count].artist);
	}
	free(cd);
	return 0;
}
 
//display records
void print_cd(album *ab){
 		puts("----------------------------------------");
		printf("%25s\n", ab->title);
		puts("----------------------------------------");
		printf("Title: %s\n", ab->title);
		printf("Artist: %s\n", ab->artist);
		printf("Tracks: %d\n", ab->tracks);
		if(ab->albumSingle == 1)
			printf("Album/Single: Album\n");
		else
			printf("Album/Single: Single\n");
		printf("Price: $%.2f\n", ab->price);	
}
 
void readAlbum(album *ab){
	ab->title = read_dyn_string("CD Title: ");
	ab->artist = read_dyn_string("Artist: ");
	ab->tracks = read_int("Tracks: ");
	ab->type = read_char("Is the a album type y for yes or n for no: ");
	if( yesno(&ab->type) == 1)
		ab->albumSingle = ALBUM;
	else 
		ab->albumSingle = SINGLE;
	ab->price = read_float("Price: ");
}
 
//pause function
void enter(char* str){
	printf("%s", str);
	getchar();
}
 
//yes or no function
int yesno(char *answer){
	char numStr[MAX_NUMSTR] = "";
	char yn;
	do{
		if(tolower(*answer) == 'y')
			return 1;
		else if(tolower(*answer) == 'n')
			return 0;
		else{
			printf("Error: enter y for yes or n for no\n");
			fgets(numStr,sizeof(numStr), stdin);
			sscanf(numStr, " %c",&yn);
			*answer = yn;
		}
	}while(1);
}
 
//read integer input
int read_int(char *prompt){
	int i = 0;
	char numStr[MAX_NUMSTR] = "";
	fputs(prompt, stdout);
	fgets(numStr,sizeof(numStr), stdin);
	sscanf(numStr, "%d", &i);
	return i;
}
 
//read character input
char read_char(char *prompt){
	char c;
	char numStr[MAX_NUMSTR] = "";
	fputs(prompt, stdout);
	fgets(numStr,sizeof(numStr), stdin);
	sscanf(numStr, " %c",&c);
	return c;
}
 
//read float input
float read_float(char *prompt){
	float f = 0.0;
	char numStr[MAX_NUMSTR] = "";
	fputs(prompt, stdout);
	fgets(numStr,sizeof(numStr), stdin);
	sscanf(numStr, "%f", &f);	
	return f;
}
 
//read a string input
char *read_dyn_string(char* prompt){
	char answer[MAX_STR];
    fputs(prompt, stdout);
	fgets(answer,sizeof(answer), stdin);
	trim_newline(answer);
	return strdup(answer);
}
 
//remove newline character on a string
void trim_newline(char* str){
	if (str[strlen(str)-1] == '\n')
		str[strlen(str)-1] = '\0';
}