Custom fields giving no values

I have the newest wordpress and polylang 0.82
I have some custom fields on my posts
I load my page with this
query_posts("post_per_page=1&p=38"); the_post();

and trying to echo get_post_meta($post->ID, "firstabild", true)

it worked great, but my polylang did get a cache-error and I needed to reinstall the plugin, now when I linked those again, it doesn’t give me any value anymore.

<?php get_header(); ?>

		<!-- index page info-->

			<div id="slideshow">
				<?php
								if (get_locale() == "sv_SE" ) {
				 query_posts("post_per_page=1&p=38"); the_post();
				}
				else {
					 query_posts("post_per_page=1&p=78"); the_post();
				}
					?>

						<?php the_content(); ?>

			</div>

				<ul class="container-menu">
					<li><a href="#"><img src="<?php echo get_post_meta($post->ID, "firstabild", true)?>test" alt="hem"></a></li>
					<li><a href="#"><img src="<?php echo get_post_meta($post->ID, "andrabild", true)?>" alt="nyheter"></a></li>
					<li><a href="#"><img src="<?php echo get_post_meta($post->ID, "tredjebild", true)?>" alt="inspiration"></a></li>
					<li><a href="#"><img src="<?php echo get_post_meta($post->ID, "fjardebild", true)?>" alt="om oss"></a></li>
				</ul>
<?php get_sidebar(); ?>

<?php get_footer(); ?>

Anyone knows a solution?