# How to identify which Manifest and Cluster Files were used to generate a GTC File

Software like Beeline, GenomeStudio, or BlueFuse Multi may show errors if loading a GTC file with a different Manifest or Cluster File that was used to create the GTC file.

To identify which Product Files were used:

1. Open the GTC file in a text editor, like Notepad++

![](https://761066130-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGM9W2DuBTgEXv1ClCm8H%2Fuploads%2Fgit-blob-42cfe693c76cba2d18d29207c9a521fc7e7523b8%2Fimage1.jpg?alt=media)

2. The file is encrypted, but the text including the Manifest and Cluster File names is human-readable.
3. Use Ctrl+F to search “.bpm” to find the text in the file.

![](https://761066130-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGM9W2DuBTgEXv1ClCm8H%2Fuploads%2Fgit-blob-a2a77aa0bcd71c67d2ffe86676254443e08095f5%2Fimage2.jpg?alt=media)

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