diff --git a/packages/bridge-server/src/upload/upload.service.ts b/packages/bridge-server/src/upload/upload.service.ts
index e182233..bc022c6 100644
--- a/packages/bridge-server/src/upload/upload.service.ts
+++ b/packages/bridge-server/src/upload/upload.service.ts
@@ -1,4 +1,4 @@
-import { Injectable } from '@nestjs/common';
+import { HttpException, HttpStatus, Injectable, NotAcceptableException } from '@nestjs/common';
 import { RacersService } from 'src/racers/racers.service';
 import { RaceResultsService } from 'src/race-results/race-results.service';
 import { RacesService } from 'src/races/races.service';
@@ -49,15 +49,23 @@ export class UploadService {
         }
 
         if(race.endDate.getTime() < Date.now()) {
+            throw new NotAcceptableException('RaceClosed', {cause: new Error(), description: 'Race closed for new entries.'})
             console.log("Too Late!")
             return;
         }
 
         if(Date.now() < race.startDate.getTime()) {
+            throw new NotAcceptableException('RaceNotOpen', {cause: new Error(), description: 'Race not yet open for entries.'})
             console.log("Too Soon!")
             return;
         }
 
+        if(body.fileTime < race.startDate.getTime()) {
+            throw new NotAcceptableException('EarlyReplay', {cause: new Error(), description: 'Replay generated before the race started.'})
+            console.log("Race Too Soon!")
+            return;
+        }
+
         let result = await this.raceResultsService.create(race.id, currentRacer.id, replay.bestTime, file.path);
         console.log(result);
 
diff --git a/packages/bridge-ui/src/app/app.config.ts b/packages/bridge-ui/src/app/app.config.ts
index 632dae6..35c1101 100644
--- a/packages/bridge-ui/src/app/app.config.ts
+++ b/packages/bridge-ui/src/app/app.config.ts
@@ -6,6 +6,7 @@ import { provideAnimations } from '@angular/platform-browser/animations';
 
 import { routes } from './app.routes';
 import { AuthInterceptor } from './interceptors/auth.interceptor';
+import { SnackbarInterceptor } from './interceptors/snackbar.interceptor';
 
 export const appConfig: ApplicationConfig = {
   providers: [
@@ -16,5 +17,6 @@ export const appConfig: ApplicationConfig = {
     ),
     importProvidersFrom(MatNativeDateModule),
     {provide: HTTP_INTERCEPTORS, useClass: AuthInterceptor, multi: true},
+    {provide: HTTP_INTERCEPTORS, useClass: SnackbarInterceptor, multi: true},
   ]
 };
diff --git a/packages/bridge-ui/src/app/components/race-details/race-details.component.html b/packages/bridge-ui/src/app/components/race-details/race-details.component.html
index b1b6514..2b6cc9f 100644
--- a/packages/bridge-ui/src/app/components/race-details/race-details.component.html
+++ b/packages/bridge-ui/src/app/components/race-details/race-details.component.html
@@ -41,7 +41,6 @@
             <div><img class="inline-medal" src="/assets/medal_bronze.png"/><p>Bronze: {{formatMilliseconds(race.bronzeTime)}}</p></div>
         </div>
     </div>
-    <mat-divider></mat-divider>
     <br/>
     <div>
         <table mat-table [dataSource]="sortedResults" class="mat-elevation-z8 results-table">
diff --git a/packages/bridge-ui/src/app/components/upload-replay-dialog/upload-replay-dialog.component.html b/packages/bridge-ui/src/app/components/upload-replay-dialog/upload-replay-dialog.component.html
index 9af9522..23b53c4 100644
--- a/packages/bridge-ui/src/app/components/upload-replay-dialog/upload-replay-dialog.component.html
+++ b/packages/bridge-ui/src/app/components/upload-replay-dialog/upload-replay-dialog.component.html
@@ -1,6 +1,7 @@
 <div class="signInForm">
     <input type="file" accept=".gbx" class="file-input" (change)="onFileSelected($event)" #fileUpload>
     <h1 mat-dialog-title>Replay Upload</h1>
+    <p>Replay files can be found in Documents/Trackmania/Replays/My Replays</p>
     <div mat-dialog-content class="full-width">
         <mat-label>File</mat-label>
         {{fileName || "No file uploaded yet."}}
diff --git a/packages/bridge-ui/src/app/components/upload-replay-dialog/upload-replay-dialog.component.ts b/packages/bridge-ui/src/app/components/upload-replay-dialog/upload-replay-dialog.component.ts
index b12f447..908f26a 100644
--- a/packages/bridge-ui/src/app/components/upload-replay-dialog/upload-replay-dialog.component.ts
+++ b/packages/bridge-ui/src/app/components/upload-replay-dialog/upload-replay-dialog.component.ts
@@ -11,8 +11,11 @@ import { MatDialogModule } from '@angular/material/dialog';
 import { MatInputModule } from '@angular/material/input';
 import { MatFormFieldModule } from '@angular/material/form-field';
 import { MatIconModule } from '@angular/material/icon';
+import { MatSnackBar } from '@angular/material/snack-bar';
 
 import { ReplaysService } from '../../services/replays.service';
+import { catchError, throwError } from 'rxjs';
+import { HttpErrorResponse } from '@angular/common/http';
 
 @Component({
   selector: 'app-upload-replay-dialog',
@@ -38,12 +41,15 @@ export class UploadReplayDialogComponent {
   fileName: string = "";
   file?: File;
   seasonId: string;
+  errors: string[];
 
   constructor(
     private replaysService: ReplaysService,
     @Inject(MAT_DIALOG_DATA) additionalData: any,
+    private _snackBar: MatSnackBar
   ) {
     this.seasonId = additionalData.seasonId;
+    this.errors = [];
   }
 
   onFileSelected(event: any) {
@@ -64,6 +70,8 @@ export class UploadReplayDialogComponent {
     formData.append("file", this.file);
     let local = this.seasonId;
     formData.append("seasonId", local);
+    let filetime = this.file.lastModified;
+    formData.append("fileTime", filetime.toString());
     const upload$ = this.replaysService.uploadReplay(formData);
     upload$.subscribe();
   }
diff --git a/packages/bridge-ui/src/app/interceptors/snackbar.interceptor.ts b/packages/bridge-ui/src/app/interceptors/snackbar.interceptor.ts
new file mode 100644
index 0000000..296d1e8
--- /dev/null
+++ b/packages/bridge-ui/src/app/interceptors/snackbar.interceptor.ts
@@ -0,0 +1,49 @@
+
+import { Injectable } from '@angular/core';
+import {
+  HttpRequest,
+  HttpHandler,
+  HttpEvent,
+  HttpInterceptor,
+  HttpResponse
+} from '@angular/common/http';
+import { Observable, throwError } from 'rxjs';
+import { catchError, tap, } from 'rxjs/operators';
+import { MatSnackBar } from '@angular/material/snack-bar';
+
+@Injectable()
+export class SnackbarInterceptor implements HttpInterceptor {
+
+  constructor(private snackBar: MatSnackBar) { }
+
+  intercept(request: HttpRequest<unknown>, next: HttpHandler): Observable<HttpEvent<unknown>> {
+    return next.handle(request).pipe(
+      tap(e => {
+        if (request.method == "POST" || request.method == "PUT")
+          if (e instanceof HttpResponse && e.status == 200) {
+            this.snackBar.open('Saved successfully.', 'close', { duration: 2000, panelClass: 'successSnack' });
+          }
+      }),
+      catchError(resp => {
+        console.log(resp);
+        let message = resp.error.error
+        switch(resp.error.message) {
+            case "RaceClosed": {
+                message = "Upload Failed: Race closed to new uploads."; 
+                break;
+            }
+            case "RaceNotOpen": {
+                message = "Upload Failed: Race not open for uploads yet."; 
+                break;
+            }
+            case "EarlyReplay": {
+                message = "Upload Failed: Replay made before race open."; 
+                break;
+            }
+        }
+        this.snackBar.open(message, 'dismiss', { panelClass: ['errorSnack'], verticalPosition: 'top'});
+        return throwError(resp);
+      })
+    );
+  }
+}
\ No newline at end of file
diff --git a/packages/bridge-ui/src/styles.scss b/packages/bridge-ui/src/styles.scss
index e04b086..3ed6fe7 100644
--- a/packages/bridge-ui/src/styles.scss
+++ b/packages/bridge-ui/src/styles.scss
@@ -55,4 +55,10 @@ body { margin: 0; font-family: Roboto, "Helvetica Neue", sans-serif; }
 
 .docs-markdown code {
     padding: 3px
+}
+
+.errorSnack { 
+    --mdc-snackbar-container-color: #f44336;
+    --mdc-snackbar-supporting-text-color: #fff;
+    --mat-snack-bar-button-color: #fff;
 }
\ No newline at end of file