Some times when I put items into the games using the creation kit they dont show up when I am playing the game while others that I added do.

Here Is the process that I use, is there something wrong with it?:

I load up creation kit select skyrim.esm and also the plugin I've been working with and set the plugin as the active file.

I load the cell up and put an item into it using drag and drop, sometimes If I put multi ple items in I just copy an item and paste it. Then I hit the save icon and load up the game, I make sure to check my plugin file before starting. I have my player saved outside the cell I am adding items to to avoid some buggyness but when my character opens the cell only some of the items I put in show up. I just put items in the rooms for decorating purposes but why isn't it working?

Not sure but it might be worth closing the creation kit down completely, then re-open and load your plugin and check to see if the items are still present in there. If they are then try starting a new game and then check the cell. Personally I always start a new game whenever I change something. Get a decent quick start mod and then you can use the console command "COC" to teleport yourself to your cell.

Ok I'll try that. Thanks.

There is a lot of on going issues "bugs". I have spent hours customizing and play and everything is fine, then I go back and my changes are all gone. You should maybe check out the bugs thread. I made a unique staircase out of static items, only half of it was in game, I thought maybe there was a limit to how many static items but it turned out to be my ESP was corrupt.

You can COC from the title screen. It makes a quick Dovakhin character for you

COC works but but some of the items are still not there. The weapons I put in seem to be the most bugged objects.