enter code hereHi,

I am using the package "SummarizedExperiment " as a dependency in my own R package. I got this warning "no function found corresponding to methods exports from ‘XVector’ for: ‘concatenateObjects" when library(SummarizedExperiment). This warning occurs in "R CMD check". How to resolve it?

sessionInfo()
R version 3.5.1 (2018-07-02)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 16.04.5 LTS

Matrix products: default
BLAS: /usr/lib/libblas/libblas.so.3.6.0
LAPACK: /usr/lib/lapack/liblapack.so.3.6.0

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
 [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C            
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] parallel  stats4    stats     graphics  grDevices utils     datasets 
[8] methods   base     

other attached packages:
 [1] SummarizedExperiment_1.10.1 DelayedArray_0.6.6         
 [3] BiocParallel_1.14.2         matrixStats_0.54.0         
 [5] Biobase_2.40.0              GenomicRanges_1.34.0       
 [7] GenomeInfoDb_1.16.0         IRanges_2.16.0             
 [9] S4Vectors_0.20.1            BiocGenerics_0.26.0        

loaded via a namespace (and not attached):
 [1] lattice_0.20-35        bitops_1.0-6           grid_3.5.1            
 [4] zlibbioc_1.26.0        XVector_0.20.0         Matrix_1.2-14         
 [7] tools_3.5.1            RCurl_1.95-4.11        compiler_3.5.1        
[10] GenomeInfoDbData_1.1.0

Thanks.

These errors (unknown functions) often occur when your installation includes packages from different versions of Bioconductor. Make sure

BiocManager::version()

returns the version that you want to use. Then that

BiocManager::valid()

reports no problems.