FUIButton Not working in iOS7.1

[superadmin84]

I have a button that I am trying to style with FlatUIKit, but It crashes the app. My code is as follows:

.h:

import <UIKit/UIKit.h>

import "FUISwitch.h"

import "FUIButton.h"

@interface setup1ViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>

@Property (nonatomic,strong) NSMutableArray *medias;
@Property (strong, nonatomic) IBOutlet UITableView *oneTableView;
@Property (weak, nonatomic) IBOutlet UIView *cellBackground;
@Property (weak, nonatomic) IBOutlet FUIButton *nextButton;

@EnD

.m:

import "ViewController.h

import "FUISwitch.h"

import "UIFont+FlatUI.h"

import "UIColor+FlatUI.h"

import "FUIButton.h"

self.nextButton.buttonColor = [UIColor turquoiseColor];
self.nextButton.shadowColor = [UIColor greenSeaColor];
self.nextButton.shadowHeight = 3.0f;
self.nextButton.cornerRadius = 6.0f;
self.nextButton.titleLabel.font = [UIFont boldFlatFontOfSize:16];
[self.nextButton setTitleColor:[UIColor cloudsColor] forState:UIControlStateNormal];
[self.nextButton setTitleColor:[UIColor cloudsColor] forState:UIControlStateHighlighted];

with error:

2014-06-22 18:10:28.970 Social Me[32843:60b] -[UIButton setButtonColor:]: unrecognized selector sent to instance 0x10ac12800
2014-06-22 18:10:28.985 Social Me[32843:60b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIButton setButtonColor:]: unrecognized selector sent to instance 0x10ac12800'
*** First throw call stack:
(
0 CoreFoundation 0x0000000101fe5495 exceptionPreprocess + 165
1 libobjc.A.dylib 0x0000000101d4499e objc_exception_throw + 43
2 CoreFoundation 0x000000010207665d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x0000000101fd6d8d __forwarding + 973
4 CoreFoundation 0x0000000101fd6938 _CF_forwarding_prep_0 + 120
5 Social Me 0x00000001000028b1 -[setup1ViewController viewDidLoad] + 337
6 UIKit 0x0000000100baa59e -[UIViewController loadViewIfRequired] + 562
7 UIKit 0x0000000100baa777 -[UIViewController view] + 29
8 UIKit 0x0000000100bc12c5 -[UINavigationController _startCustomTransition:] + 628
9 UIKit 0x0000000100bcc6f5 -[UINavigationController _startDeferredTransitionIfNeeded:] + 401
10 UIKit 0x0000000100bcd238 -[UINavigationController __viewWillLayoutSubviews] + 43
11 UIKit 0x0000000100ce7895 -[UILayoutContainerView layoutSubviews] + 202
12 UIKit 0x0000000100b14993 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 354
13 QuartzCore 0x0000000100943802 -[CALayer layoutSublayers] + 151
14 QuartzCore 0x0000000100938369 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 363
15 QuartzCore 0x00000001009381ea _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
16 QuartzCore 0x00000001008abfb8 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 252
17 QuartzCore 0x00000001008ad030 _ZN2CA11Transaction6commitEv + 394
18 UIKit 0x0000000100ab3024 _UIApplicationHandleEventQueue + 10914
19 CoreFoundation 0x0000000101f74d21 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 17
20 CoreFoundation 0x0000000101f745f2 __CFRunLoopDoSources0 + 242
21 CoreFoundation 0x0000000101f9046f __CFRunLoopRun + 767
22 CoreFoundation 0x0000000101f8fd83 CFRunLoopRunSpecific + 467
23 GraphicsServices 0x0000000103a2bf04 GSEventRunModal + 161
24 UIKit 0x0000000100ab4e33 UIApplicationMain + 1010
25 Social Me 0x000000010000ed03 main + 115
26 libdyld.dylib 0x0000000102a3e5fd start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)

[Andrej Mihajlov]

Your forgot to set a class for button in IB.